]> Thing Object the class of Objects; disjoint with Event SA 08/11/04 Event the class of Events SA 08/11/04 AttributeValue a class containing all attribute values SA 08/11/04 PhysicalAnatomicalEntity the class of all anatomical entities (parts); disjoint with Organism SA 08/11/04 Organism the class of all whole organisms SA 08/11/04 StageAttributeValue the class of all stage attributes SA 08/11/04 SexAttributeValue the class of all sex attribute values SA 08/11/04 Mammalia the class of all mammals SA 08/11/04 Mus musculus the class of all mouse organisms SA 08/11/04 Male Mus musculus the class of all male mouse organisms SA 08/11/04 Female Mus musculus the class of all female mouse organisms SA 08/11/04 Drosophila melanogaster the class of all drosophila organisms SA 08/11/04 Male Drosophila melanogaster the class of all male drosophila organisms SA 08/11/04 Female Drosophila melanogaster the class of all female drosophila organisms SA 08/11/04 Caenorhabditis elegans the class of all C. Elegans organisms SA 08/11/04 Male Caenorhabditis elegans the class of all male C. Elegans organisms SA 08/11/04 Hermaphrodite Caenorhabditis elegans the class of all hermaphrodite C. Elegans organisms SA 08/11/04 Homo sapiens the class of all humans SA 08/11/04 Male Homo sapiens the class of all male humans SA 08/11/04 Female Homo sapiens the class of all female humans SA 08/11/04 TheilerStage the set of Theiler stages SA 08/11/04 CarnegieStage the set of Carnegie stages SA 08/11/04 Female SA 1/10/04 Male SA 1/10/04 Hermaphrodite SA 1/10/04 CarnegieStage05a SA 20/03/04 CarnegieStage05b SA 20/03/04 CarnegieStage05c SA 20/03/04 CarnegieStage06a SA 20/03/04 CarnegieStage06b SA 20/03/04 CarnegieStage15 TheilerStage14 SA 20/03/04 CarnegieStage01 TheilerStage23 SA 20/03/04 CarnegieStage12 TheilerStage01 SA 20/03/04 CarnegieStage02 TheilerStage15 SA 20/03/04 TheilerStage04 SA 20/03/04 TheilerStage05 SA 20/03/04 CarnegieStage07 TheilerStage20 SA 20/03/04 TheilerStage11 SA 20/03/04 TheilerStage19 SA 20/03/04 CarnegieStage19 TheilerStage22 SA 20/03/04 TheilerStage12 SA 20/03/04 CarnegieStage04 TheilerStage26 SA 20/03/04 TheilerStage24 SA 20/03/04 TheilerStage17 SA 20/03/04 TheilerStage02 SA 20/03/04 TheilerStage09 SA 20/03/04 CarnegieStage09 TheilerStage08 SA 20/03/04 CarnegieStage08 TheilerStage07 SA 20/03/04 CarnegieStage23 TheilerStage21 SA 20/03/04 CarnegieStage17 TheilerStage27 SA 20/03/04 TheilerStage16 SA 20/03/04 TheilerStage18 SA 20/03/04 CarnegieStage20 CarnegieStage21 CarnegieStage14 TheilerStage13 SA 20/03/04 CarnegieStage10 TheilerStage03 SA 20/03/04 CarnegieStage13 CarnegieStage06 CarnegieStage16 CarnegieStage05 TheilerStage25 SA 20/03/04 TheilerStage10 SA 20/03/04 TheilerStage28 SA 20/03/04 CarnegieStage22 CarnegieStage18 CarnegieStage11 TheilerStage06 SA 20/03/04 CarnegieStage03 floor plate floor plate genital tubercle genital tubercle body body lobar bronchus lobar bronchus nucleus polposus nucleus polposus neural fold neural fold ear ear gonad gonad rhombomere 04 rhombomere 04 parietal parietal right ventricle right ventricle molar molar rest of roof plate rest of roof plate T3 T3 sulcus limitans sulcus limitans falx cerebri falx cerebri embryonic fissure embryonic fissure cardiac jelly cardiac jelly non-tubular part non-tubular part marginal layer marginal layer olfactory lobe olfactory lobe vertebral pre-cartilage condensation vertebral pre-cartilage condensation metatarsus metatarsus floor plate floor plate lobar bronchus lobar bronchus lieno-renal ligament lieno-renal ligament lateral wall lateral wall branchial arch branchial arch phalanx pre-cartilage condensation phalanx pre-cartilage condensation primitive ventricle primitive ventricle mesenchyme mesenchyme ectoderm ectoderm skeletal muscle skeletal muscle iliac artery iliac artery dorsal root ganglion dorsal root ganglion inter-subcardinal venous anastomosis inter-subcardinal venous anastomosis annulus fibrosus annulus fibrosus T6 T6 mesenchyme mesenchyme marginal layer marginal layer lateral plate mesenchyme lateral plate mesenchyme optic sulcus optic sulcus choroid plexus choroid plexus bulbo-urethral glands bulbo-urethral glands visceral visceral floor plate floor plate lumen lumen T2 T2 turbinate bones turbinate bones foramen secundum foramen secundum dorsal dorsal intervertebral disc intervertebral disc abdominal aorta abdominal aorta primitive seminiferous tubules primitive seminiferous tubules myocoele myocoele roof roof dermomyotome dermomyotome ventricular layer ventricular layer inferior olivary nucleus inferior olivary nucleus vascular element vascular element Tl17 Tl17 primordial germ cells primordial germ cells pinna pinna handplate handplate glossopharyngeal-vagus IX-X preganglion complex glossopharyngeal-vagus IX-X preganglion complex lumen lumen sclerotome sclerotome somite 30 somite 30 fungiform papillae fungiform papillae nucleus polposus nucleus polposus ventricular layer ventricular layer cranial component cranial component lumbo-sacral plexus lumbo-sacral plexus mesenchyme mesenchyme epiblast epiblast paraxial mesenchyme paraxial mesenchyme frontal bone primordium frontal bone primordium neurohypophysis neurohypophysis Tl2 Tl2 upper leg upper leg liver liver pigmented retinal epithelium pigmented retinal epithelium infundibular recess of 3rd ventricle infundibular recess of 3rd ventricle supraoccipital cartilage condensation supraoccipital cartilage condensation hypogastric plexus hypogastric plexus ridge ridge sclerotome sclerotome common common pectoral girdle and thoracic body wall pectoral girdle and thoracic body wall dorsal mesentery dorsal mesentery endoderm endoderm epidermis epidermis basal plate basal plate dermomyotome dermomyotome dorsal mesogastrium dorsal mesogastrium cavity cavity mesenchyme mesenchyme metanephric mesenchyme metanephric mesenchyme principal artery to hindlimb principal artery to hindlimb marginal layer marginal layer ethmoid bone ethmoid bone sclera sclera vomeronasal organ vomeronasal organ inferior horn inferior horn 4th arch artery 4th arch artery floor plate floor plate dermis dermis dorsal aorta dorsal aorta mesothelial lining mesothelial lining lobar bronchus lobar bronchus annulus fibrosus annulus fibrosus dermis dermis mantle layer mantle layer renal vein renal vein sclerotome sclerotome right right somite 31 somite 31 rhombomere 06 rhombomere 06 roof plate roof plate greater omentum greater omentum pericardial component pericardial component physiological umbilical hernia physiological umbilical hernia body body inguinal ring inguinal ring branchial groove branchial groove epithelium epithelium endoderm endoderm caudal part caudal part lateral wall lateral wall epithelium epithelium associated mesenchyme associated mesenchyme ventricular layer ventricular layer ophthalmic division ophthalmic division malleus malleus urogenital system urogenital system T1 T1 mesothelium mesothelium parietal parietal epithelium epithelium epithelium epithelium lateral wall lateral wall xiphisternum xiphisternum duodenum duodenum nucleus polposus nucleus polposus ulna ulna lumen lumen ectoderm ectoderm associated mesenchyme associated mesenchyme Tl19 Tl19 skeletal muscle skeletal muscle thin fibrous capsule thin fibrous capsule primary choana primary choana L2 L2 Meckel's cartilage pre-cartilage condensation Meckel's cartilage pre-cartilage condensation lower jaw lower jaw rhombomere 03 rhombomere 03 common common nucleus polposus nucleus polposus neural crest neural crest metatarsus pre-cartilage condensation metatarsus pre-cartilage condensation rhombomere 05 rhombomere 05 mesentery mesentery nucleus polposus nucleus polposus non-tubular part non-tubular part superior superior metacarpus cartilage condensation metacarpus cartilage condensation ectoderm ectoderm Tl14 Tl14 phalanx pre-cartilage condensation phalanx pre-cartilage condensation dermis dermis gastro-oesophageal junction gastro-oesophageal junction dermomyotome dermomyotome tibia cartilage condensation tibia cartilage condensation vascular element vascular element glandular region glandular region mesoderm mesoderm atrio-ventricular canal atrio-ventricular canal associated mesenchyme associated mesenchyme roof plate roof plate lambdoidal suture lambdoidal suture S2 S2 primitive seminiferous tubules primitive seminiferous tubules endoderm endoderm lower part lower part styloglossus styloglossus testicular cords testicular cords endocardial lining endocardial lining metacarpus pre-cartilage condensation metacarpus pre-cartilage condensation roof plate roof plate optic cup optic cup T3 T3 mesenchyme derived from neural crest mesenchyme derived from neural crest dermis dermis neural crest neural crest pre-hepatic part pre-hepatic part neural ectoderm neural ectoderm metatarsus metatarsus cavity cavity iliacus iliacus basioccipital cartilage condensation basioccipital cartilage condensation visceral organ visceral organ capsule capsule dermis dermis ductus arteriosus ductus arteriosus vascular element vascular element floor plate floor plate floor plate floor plate smooth muscle smooth muscle epithelium epithelium choroid plexus choroid plexus hamstrings hamstrings epithelium epithelium dermomyotome dermomyotome head mesenchyme head mesenchyme epithelium epithelium neural lumen neural lumen mandible mandible frontal bone frontal bone dermomyotome dermomyotome floor plate floor plate nucleus polposus nucleus polposus somite 02 somite 02 process process dermis dermis roof plate roof plate pituitary pituitary rhombomere 05 rhombomere 05 marginal layer marginal layer dorsal aorta dorsal aorta mesenchyme derived from head mesoderm mesenchyme derived from head mesoderm S3 S3 T4 T4 body body ectoderm ectoderm endoderm endoderm frenulum frenulum pulmonary artery pulmonary artery lumen lumen sinus venosus sinus venosus vascular element vascular element liver and biliary system liver and biliary system epithelium epithelium endoderm endoderm somite 12 somite 12 marginal layer marginal layer glomeruli glomeruli epithelium epithelium hyoid bone hyoid bone thyroid thyroid surface ectoderm surface ectoderm primordial germ cells primordial germ cells efferent duct efferent duct cochlea cochlea S3 S3 vertebra vertebra rest of mesenchyme rest of mesenchyme segmental spinal nerve segmental spinal nerve latero-nasal process latero-nasal process hepatic sinusoids hepatic sinusoids roof plate roof plate endoderm endoderm lumen lumen pontine cistern pontine cistern lens fibres lens fibres superior superior cricoid cricoid primary palate primary palate footplate footplate germinal epithelium germinal epithelium internal carotid artery internal carotid artery Tl11 Tl11 associated mesenchyme associated mesenchyme ulna cartilage condensation ulna cartilage condensation neural plate neural plate naris naris annulus fibrosus annulus fibrosus ventricular layer ventricular layer annulus fibrosus annulus fibrosus floor plate floor plate cardiac jelly cardiac jelly foramen primum foramen primum Tl1 Tl1 trigone region trigone region spleen primordium spleen primordium exocoelomic cavity exocoelomic cavity ventricle ventricle sclerotome sclerotome Rathke's pouch Rathke's pouch peritoneal cavity peritoneal cavity dermomyotome dermomyotome T3 T3 roof plate roof plate nucleus polposus nucleus polposus floorplate floorplate ductus reuniens ductus reuniens tear duct tear duct germinal epithelium germinal epithelium pleuro-peritoneal canal pleuro-peritoneal canal L3 L3 L6 L6 cardiac muscle cardiac muscle atrio-ventricular cushion tissue atrio-ventricular cushion tissue roof plate roof plate marginal layer marginal layer anterior anterior otic capsule otic capsule nephric duct nephric duct pars tuberalis pars tuberalis mesenchyme mesenchyme associated mesenchyme associated mesenchyme caudal half caudal half central nervous system central nervous system femur femur dental papilla dental papilla sympathetic sympathetic sclerotome sclerotome L3 L3 marginal layer marginal layer mantle layer mantle layer latissimus dorsi latissimus dorsi associated mesenchyme associated mesenchyme somite 32 somite 32 lesser omentum lesser omentum mesenchyme mesenchyme pituitary pituitary skeletal muscle skeletal muscle skeletal muscle skeletal muscle nerve nerve annulus fibrosus annulus fibrosus medial medial mesentery mesentery myocoele myocoele ventricular layer ventricular layer cortex cortex forelimb forelimb urogenital sinus urogenital sinus tail bud tail bud neural crest neural crest lumen lumen bulbar ridge bulbar ridge floor plate floor plate marginal layer marginal layer great cerebral vein of Galen great cerebral vein of Galen nucleus polposus nucleus polposus digastric muscle digastric muscle radius cartilage condensation radius cartilage condensation intercostal intercostal frenulum frenulum vibrissa vibrissa epidermis epidermis epididymis epididymis cervical cervical epithelium epithelium coronary artery coronary artery vascular element vascular element paraganglion of Zuckerkandl paraganglion of Zuckerkandl anterior epithelium anterior epithelium mantle layer mantle layer Reichert's membrane Reichert's membrane roof plate roof plate annulus fibrosus annulus fibrosus somite 13 somite 13 maxilla maxilla epithelium epithelium Tl15 Tl15 hyoid cartilage cartilage condensation hyoid cartilage cartilage condensation ectoderm ectoderm capsule capsule sclerotome sclerotome enamel organ enamel organ marginal layer marginal layer skeletal muscle skeletal muscle myocoele myocoele ventricular layer ventricular layer carotid sinus carotid sinus mesenchyme mesenchyme associated mesenchyme associated mesenchyme carotid canal carotid canal cartilaginous ring cartilaginous ring auditory hillocks auditory hillocks detrusor muscle detrusor muscle annulus fibrosus annulus fibrosus parietal parietal epithelium epithelium vesical part vesical part dermomyotome dermomyotome vascular element vascular element rhombomere 04 rhombomere 04 lateral wall lateral wall vena cava vena cava testicular artery testicular artery epithelium epithelium future tympanic membrane future tympanic membrane sclerotome sclerotome ciliary body ciliary body telencephalic part of interventricular foramen telencephalic part of interventricular foramen parietal parietal mandibular division mandibular division presumptive nephric duct presumptive nephric duct nucleus polposus nucleus polposus large intestine large intestine T6 T6 left left T9 T9 right right nasal bone nasal bone phalanx phalanx epithelium epithelium 4th ventricle 4th ventricle recurrent laryngeal branch recurrent laryngeal branch visceral visceral musculo-phrenic vein musculo-phrenic vein somite somite unsegmented mesenchyme unsegmented mesenchyme mesoderm mesoderm marginal layer marginal layer spinal artery spinal artery cardiac jelly cardiac jelly skin skin neural fold neural fold rostral neuropore rostral neuropore dermis dermis nucleus polposus nucleus polposus dermis dermis associated mesenchyme associated mesenchyme omental bursa omental bursa lateral lateral convoluted tubules convoluted tubules parenchyma parenchyma epithelium epithelium dental lamina dental lamina shoulder joint primordium shoulder joint primordium nucleus polposus nucleus polposus mesenchyme mesenchyme endoderm endoderm somite 03 somite 03 S2 S2 annular ligament annular ligament epithelium epithelium mesenchyme mesenchyme common common T1 T1 one-cell stage one-cell stage digit 3 digit 3 Tl2 Tl2 basilar artery basilar artery deep dorsal vein of penis deep dorsal vein of penis floorplate floorplate myocoele myocoele islets of Langerhans islets of Langerhans associated mesenchyme associated mesenchyme floor plate floor plate cardiac jelly cardiac jelly dorsal grey horn dorsal grey horn branchial membrane branchial membrane choroid choroid epithelium epithelium marginal layer marginal layer epithelium epithelium myocoele myocoele dermal component dermal component Tl10 Tl10 somite 11 somite 11 T8 T8 duodenum duodenum phalanx cartilage condensation phalanx cartilage condensation intervertebral disc intervertebral disc falciform ligament falciform ligament neural crest neural crest floor plate floor plate ventral bud ventral bud Mullerian tubercle Mullerian tubercle C1 C1 anterior cerebral artery anterior cerebral artery associated mesenchyme associated mesenchyme primary trophoblast giant cells primary trophoblast giant cells gland gland ventricular layer ventricular layer fungiform papillae fungiform papillae floor plate floor plate annulus fibrosus annulus fibrosus myocoele myocoele rhombomere 07 rhombomere 07 epidermis epidermis excretory component excretory component metacarpus metacarpus epithelium epithelium ventricular layer ventricular layer epithelium epithelium L5 L5 parenchyma parenchyma Tl29 Tl29 ganglion ganglion mantle layer mantle layer mesothelium mesothelium mantle layer mantle layer epithelium epithelium anterior anterior lung lung epigastric vein epigastric vein epithelium epithelium vascular element vascular element somite 33 somite 33 vascular element vascular element parietal parietal crus commune crus commune trochlear IV trochlear IV splenic primordium splenic primordium mesenchyme mesenchyme right recurrent laryngeal branch right recurrent laryngeal branch lenticular nucleus lenticular nucleus pericardial cavity pericardial cavity ectoderm ectoderm somite 24 somite 24 metatarsus metatarsus future spinal cord future spinal cord associated mesenchyme associated mesenchyme superior superior neural lumen neural lumen trigeminal V trigeminal V salivary gland salivary gland epithelium epithelium inferior petrosal inferior petrosal dorsal mesentery dorsal mesentery nucleus polposus nucleus polposus neural crest neural crest phalanx cartilage condensation phalanx cartilage condensation myocoele myocoele myocoele myocoele pia mater pia mater myocoele myocoele epidermis epidermis mesenchyme mesenchyme greater horn greater horn cardiac jelly cardiac jelly Tl19 Tl19 circumvallate papilla circumvallate papilla sclerotome sclerotome mesovarium mesovarium left ventricle left ventricle nerve nerve hepatic sinusoids hepatic sinusoids mesenchyme mesenchyme left lung left lung phalanx phalanx associated mesenchyme associated mesenchyme dermomyotome dermomyotome lateral wall lateral wall metacarpus metacarpus tibia tibia left lung rudiment left lung rudiment mesenchyme mesenchyme subarachnoid space subarachnoid space metatarsus metatarsus annulus fibrosus annulus fibrosus gland gland posterior cerebral artery posterior cerebral artery tooth tooth L4 L4 other mesenchyme other mesenchyme associated mesenchyme associated mesenchyme T8 T8 ectoderm ectoderm anterior anterior metacarpus pre-cartilage condensation metacarpus pre-cartilage condensation cystic duct cystic duct epithelium epithelium endocardial lining endocardial lining ophthalmic vein ophthalmic vein dermis dermis annulus fibrosus annulus fibrosus alveolar duct alveolar duct skin skin thyroid primordium thyroid primordium roof plate roof plate trigeminal V preganglion trigeminal V preganglion filiform papillae filiform papillae Tl25 Tl25 sclerotome sclerotome lumen lumen ectoderm ectoderm pharyngeal ligament pharyngeal ligament parenchyma parenchyma T7 T7 mantle layer mantle layer retina retina sclerotome condensation sclerotome condensation mesenchyme mesenchyme roof plate roof plate tail tail marginal layer marginal layer occipital myotome occipital myotome aortico-pulmonary spiral septum aortico-pulmonary spiral septum rhombomere 05 rhombomere 05 suspensory ligament suspensory ligament S4 S4 pectoralis minor pectoralis minor Meckel's cartilage Meckel's cartilage neural fold neural fold oesophagus oesophagus cardiac muscle cardiac muscle Tl12 Tl12 epithelium epithelium S4 S4 lateral wall lateral wall epithelium epithelium cerebral artery cerebral artery T5 T5 vitelline vein vitelline vein metacarpus cartilage condensation metacarpus cartilage condensation anterior pro-rhombomere anterior pro-rhombomere two-cell stage two-cell stage somite 23 somite 23 roof plate roof plate costo-vertebral joint costo-vertebral joint dermomyotome dermomyotome nucleus polposus nucleus polposus blood blood endoderm endoderm epithelium epithelium annulus fibrosus annulus fibrosus rest of ectoderm rest of ectoderm skeleton skeleton styloglossus styloglossus neural tube neural tube median median inferior recess inferior recess valve valve mesentery mesentery talus talus skeleton skeleton endocardial lining endocardial lining lateral wall lateral wall joint joint epithelium epithelium primordial germ cells primordial germ cells associated mesenchyme associated mesenchyme lateral wall lateral wall mesenchyme mesenchyme right right embryo embryo branchial membrane branchial membrane levator ani levator ani fenestra vestibuli fenestra vestibuli mantle layer mantle layer C2 C2 epithelium epithelium myocoele myocoele internal layer internal layer pre-otic sulcus pre-otic sulcus medullary stroma medullary stroma hilus hilus vascular element vascular element sclerotome sclerotome mesothelium mesothelium pretracheal pretracheal annulus fibrosus annulus fibrosus intervertebral disc intervertebral disc cardiac jelly cardiac jelly future spinal cord future spinal cord common iliac vein common iliac vein epithelium epithelium Tl1 Tl1 T13 T13 marginal layer marginal layer skin skin equatorial epithelium equatorial epithelium vascular element vascular element metatarsus metatarsus C1 C1 thyroid vein thyroid vein inner canthus inner canthus spinal component spinal component cerebellum primordium cerebellum primordium epidermis epidermis lumen lumen Tl28 Tl28 parietal bone primordium parietal bone primordium thyrohyoid thyrohyoid posterior posterior ectoderm ectoderm thyroglossal duct thyroglossal duct primitive Sertoli cells primitive Sertoli cells thyroglossal duct thyroglossal duct definitive endoderm definitive endoderm intercostal intercostal rest of alar plate rest of alar plate mantle layer mantle layer sulcus limitans sulcus limitans C2 C2 hyaloid vascular plexus hyaloid vascular plexus T7 T7 bronchiole bronchiole dermis dermis node node shoulder joint shoulder joint mandibular process mandibular process sclerotome sclerotome marginal layer marginal layer epithelium epithelium dermomyotome dermomyotome interventricular septum interventricular septum splenic artery splenic artery gastro-oesophageal junction gastro-oesophageal junction myocoele myocoele jugular vein jugular vein glossopharyngeal-vagus IX-X ganglion complex glossopharyngeal-vagus IX-X ganglion complex axial skeleton axial skeleton optic nerve optic nerve choroid invagination choroid invagination mesentery mesentery superior sagittal superior sagittal epithelium epithelium associated mesenchyme associated mesenchyme vault of skull vault of skull cardiac muscle cardiac muscle mesenchyme mesenchyme floor plate floor plate alveolus alveolus mesenchyme mesenchyme temporal lobe temporal lobe ovarian vein ovarian vein 3rd ventricle 3rd ventricle claw claw venous valve venous valve parasympathetic parasympathetic facial VII facial VII external sphincter external sphincter mesenchyme mesenchyme sclerotome sclerotome endocardial tube endocardial tube ductus venosus ductus venosus somite 10 somite 10 serosal pericardium serosal pericardium amnion amnion future diencephalon future diencephalon Harderian gland Harderian gland epithelium epithelium trophectoderm trophectoderm internal thoracic artery internal thoracic artery dermis dermis dermomyotome dermomyotome myocoele myocoele L4 L4 pia mater pia mater oviduct oviduct anal pit anal pit epithelium epithelium vascular element vascular element skin skin T1 T1 gland gland cavity cavity pleuro-peritoneal folds pleuro-peritoneal folds calcaneum calcaneum phalanx phalanx primary follicles primary follicles cardiac muscle cardiac muscle roof plate roof plate roof roof mouse mouse arch of aorta arch of aorta calcaneum cartilage condensation calcaneum cartilage condensation right right associated mesenchyme associated mesenchyme myocoele myocoele associated mesenchyme associated mesenchyme diencephalic part of interventricular foramen diencephalic part of interventricular foramen neural crest neural crest Tl14 Tl14 neural crest neural crest mesenchyme mesenchyme claw claw epidermis epidermis lens lens pulmonary trunk pulmonary trunk dermomyotome dermomyotome associated mesenchyme associated mesenchyme T4 T4 dermomyotome dermomyotome urorectal septum urorectal septum mesenchyme mesenchyme metatarsus pre-cartilage condensation metatarsus pre-cartilage condensation cavity cavity epithelium epithelium aortic sinus aortic sinus annulus fibrosus annulus fibrosus roof plate roof plate mesenchyme mesenchyme lateral wall lateral wall epithelium epithelium body-wall mesenchyme body-wall mesenchyme L5 L5 somite 34 somite 34 posterior pro-rhombomere posterior pro-rhombomere endolymphatic appendage endolymphatic appendage parietal parietal sclerotome sclerotome epithelium epithelium superior horn superior horn malleus pre-cartilage condensation malleus pre-cartilage condensation auricular region auricular region endocardial lining endocardial lining femur pre-cartilage condensation femur pre-cartilage condensation annulus fibrosus annulus fibrosus pericardio-peritoneal canal pericardio-peritoneal canal cribriform plate cribriform plate bulbar cushion bulbar cushion nucleus polposus nucleus polposus jugular foramen jugular foramen mesenchyme mesenchyme mantle layer mantle layer middle lobe middle lobe marginal layer marginal layer nucleus polposus nucleus polposus ventricular layer ventricular layer sutures and fontanelles sutures and fontanelles epidermis epidermis somite 22 somite 22 intraretinal space intraretinal space superior superior endoderm endoderm rest of mesenchyme rest of mesenchyme choroid plexus choroid plexus floor plate floor plate nephric duct nephric duct vascular element vascular element temporalis temporalis superior superior skin skin cavity cavity vascular element vascular element mesentery mesentery basisphenoid bone basisphenoid bone ventricular layer ventricular layer septum primum septum primum choroid plexus choroid plexus preanal component preanal component Tl13 Tl13 annulus fibrosus annulus fibrosus hepatic diverticulum hepatic diverticulum mantle layer mantle layer mesentery mesentery brachialis brachialis epithelium epithelium mantle layer mantle layer sclerotome sclerotome biliary bud biliary bud myelencephalon myelencephalon cartilage condensation cartilage condensation peritoneal component peritoneal component epithelium epithelium intrahepatic part intrahepatic part intermediate endoderm intermediate endoderm marginal layer marginal layer neural fold neural fold cranial muscle cranial muscle myocoele myocoele somite somite surface ectoderm of the eye surface ectoderm of the eye lumen lumen lumbar region lumbar region sclerotome sclerotome C1 C1 epidermis epidermis rhombomere 02 rhombomere 02 associated mesenchyme associated mesenchyme dermal component dermal component vascular element vascular element dermis dermis mantle layer mantle layer cardiac muscle cardiac muscle shoulder shoulder epidermis epidermis alveolar duct alveolar duct mesenchyme mesenchyme metatarsus pre-cartilage condensation metatarsus pre-cartilage condensation vascular element vascular element endocardial tube endocardial tube neural fold neural fold endocardial tube endocardial tube mesenchyme mesenchyme T13 T13 buccopharyngeal membrane buccopharyngeal membrane ventricular layer ventricular layer elbow elbow mesenchyme mesenchyme neural fold neural fold gland gland floor plate floor plate pelvic girdle pelvic girdle stapes stapes anal membrane anal membrane stapedius muscle stapedius muscle exoccipital pre-cartilage condensation exoccipital pre-cartilage condensation myocoele myocoele intrinsic intrinsic radio-ulnar joint radio-ulnar joint ventricular layer ventricular layer coeliac coeliac digit 5 digit 5 calcaneum pre-cartilage condensation calcaneum pre-cartilage condensation lateral mesenchyme derived from mesoderm lateral mesenchyme derived from mesoderm somite 18 somite 18 mesenchyme mesenchyme fungiform papillae fungiform papillae dermomyotome dermomyotome nose nose epithelium epithelium 2nd arch 2nd arch pelvic girdle pelvic girdle endocardial lining endocardial lining endoderm endoderm biceps biceps nucleus polposus nucleus polposus sphenoid sphenoid dermomyotome dermomyotome epithelium epithelium epidermis epidermis inferior inferior blood island blood island sagittal suture sagittal suture vascular element vascular element optic recess optic recess optic pit optic pit tracheal diverticulum tracheal diverticulum handplate handplate right right digit 4 digit 4 annulus fibrosus annulus fibrosus somite 36 somite 36 prepuce prepuce tympanic membrane primodium tympanic membrane primodium trapezius trapezius pons pons mantle layer mantle layer otic cartilage otic cartilage manubrium sterni manubrium sterni ventricular layer ventricular layer S1 S1 Tl18 Tl18 Tl6 Tl6 tarsus tarsus sclerotome sclerotome dental papilla dental papilla nucleus polposus nucleus polposus T6 T6 principal artery to forelimb principal artery to forelimb somite 01 somite 01 S4 S4 associated mesenchyme associated mesenchyme vascular element vascular element lumen lumen phalanx phalanx T7 T7 associated mesenchyme associated mesenchyme optic eminence optic eminence T12 T12 enamel organ enamel organ urogenital mesentery urogenital mesentery phalanx cartilage condensation phalanx cartilage condensation marginal layer marginal layer medulla medulla epithelium epithelium C1 C1 compacted morula compacted morula T3 T3 cranial cranial vascular element vascular element blood island blood island radio-carpal joint radio-carpal joint ectoderm ectoderm associated mesenchyme associated mesenchyme lumen lumen fissure fissure left left somatopleure somatopleure epithelium epithelium floor plate floor plate ventral mesentery ventral mesentery epithelium epithelium mesenchyme derived from neural crest mesenchyme derived from neural crest diencephalon diencephalon inferior inferior gonadal component gonadal component dorsal bud dorsal bud pituitary fossa pituitary fossa scapula scapula neural retina neural retina gastro-splenic ligament gastro-splenic ligament ventricular layer ventricular layer Tl21 Tl21 T4 T4 mesorchium mesorchium marginal layer marginal layer hepatic sinusoids hepatic sinusoids metacarpus pre-cartilage condensation metacarpus pre-cartilage condensation ectoderm ectoderm Tl10 Tl10 floor plate floor plate ventricular layer ventricular layer metacarpus pre-cartilage condensation metacarpus pre-cartilage condensation hip joint primordium hip joint primordium lateral wall lateral wall ventricular layer ventricular layer lumen lumen marginal layer marginal layer sternohyoid sternohyoid rectum rectum lobe lobe ulnar nerve ulnar nerve tongue tongue epithelium epithelium constrictor muscle constrictor muscle portal vein portal vein epidermis epidermis myocoele myocoele greater horn greater horn inferior inferior patella CC patella CC crus penis crus penis dermomyotome dermomyotome skeletal muscle skeletal muscle epithelium epithelium thyroid thyroid meninges meninges midgut midgut dermomyotome dermomyotome annulus fibrosus annulus fibrosus T2 T2 septum secundum septum secundum left left mesoderm mesoderm sigmoid sigmoid fabella CC fabella CC associated mesenchyme associated mesenchyme chorion chorion axillary vein axillary vein epithelium epithelium right lung right lung optic disc optic disc 4th arch 4th arch neural crest neural crest annulus fibrosus annulus fibrosus accessory lobe accessory lobe urethra urethra nuclear layer nuclear layer rhombomere 03 rhombomere 03 rest of mesenchyme rest of mesenchyme vascular element vascular element vascular element vascular element cardiac jelly cardiac jelly inferior inferior rhombomere 04 rhombomere 04 mantle layer mantle layer spinal component spinal component alveolar sulcus alveolar sulcus prostatic utricle prostatic utricle cranial lobe cranial lobe gluteus maximus gluteus maximus sulcus terminalis sulcus terminalis neural ectoderm neural ectoderm nucleus polposus nucleus polposus intraventricular portion intraventricular portion vascular element vascular element parenchyma parenchyma dermomyotome dermomyotome vertebra vertebra cardiac muscle cardiac muscle dermomyotome dermomyotome lumen lumen myocoele myocoele lateral wall lateral wall associated mesenchyme associated mesenchyme myocoele myocoele major major mesentery mesentery embryonic nucleus embryonic nucleus female female S3 S3 vascular element vascular element falciform ligament falciform ligament sclerotome sclerotome Tl8 Tl8 epithelium epithelium interthalamic adhesion interthalamic adhesion Tl9 Tl9 epithelium epithelium spinal vein spinal vein mesenchyme mesenchyme pectoralis major pectoralis major outer nuclear layer outer nuclear layer Tl30 Tl30 hepatic ducts hepatic ducts laryngeal laryngeal marginal layer marginal layer lumen lumen uterine horn uterine horn pia mater pia mater associated mesenchyme associated mesenchyme orbital fat pad orbital fat pad epithelium epithelium neural crest neural crest T2 T2 facial neural crest facial neural crest sclerotome sclerotome mesenchyme mesenchyme dermomyotome dermomyotome stapes cartilage condensation stapes cartilage condensation middle cerebral artery middle cerebral artery digit 4 digit 4 cloacal membrane cloacal membrane endothelium endothelium dorsal mesogastrium dorsal mesogastrium phalanx phalanx mesenchyme mesenchyme vascular element vascular element associated mesenchyme associated mesenchyme associated mesenchyme associated mesenchyme dermis dermis greater omentum greater omentum 1st arch artery 1st arch artery nerve fibre layer nerve fibre layer parenchyma parenchyma mediastinum testis mediastinum testis inferior inferior associated mesenchyme associated mesenchyme vertebral cartilage condensation vertebral cartilage condensation sciatic nerve sciatic nerve caudate lobe caudate lobe valve valve superior superior mesenchyme derived from head mesoderm mesenchyme derived from head mesoderm associated mesenchyme associated mesenchyme ectoderm ectoderm epithelium epithelium T7 T7 epithelium epithelium cerebellum cerebellum epithelium epithelium lumen lumen nerve trunk nerve trunk myelohyoid myelohyoid cardiac muscle cardiac muscle biceps biceps skeleton skeleton myocoele myocoele trunk mesenchyme trunk mesenchyme surface epithelium surface epithelium vascular element vascular element mesencephalic vesicle mesencephalic vesicle endocardial lining endocardial lining marginal layer marginal layer psoas minor psoas minor chondrocranium chondrocranium epithelium epithelium T5 T5 branchial pouch branchial pouch foregut diverticulum foregut diverticulum mesenteric artery mesenteric artery primordial germ cells primordial germ cells mesenchyme mesenchyme T10 T10 sciatic sciatic rhombomere 01 rhombomere 01 parietal endoderm parietal endoderm mesenchyme mesenchyme mesoduodenum mesoduodenum vascular element vascular element vitelline venous plexus vitelline venous plexus somite 35 somite 35 myocoele myocoele metatarsus cartilage condensation metatarsus cartilage condensation floor plate floor plate ectoderm ectoderm endocardial tube endocardial tube venous dural venous dural sclerotome sclerotome Tl5 Tl5 annulus fibrosus annulus fibrosus rest of ectoderm rest of ectoderm C2 C2 epidermal component epidermal component duodenal papilla duodenal papilla Tl17 Tl17 phalanx phalanx digit 5 digit 5 pelvic part pelvic part T8 T8 heart heart T11 T11 pia mater pia mater lingual branch lingual branch nucleus polposus nucleus polposus tarsus tarsus lumen lumen roof plate roof plate ectoderm ectoderm genioglossus genioglossus epithelium epithelium annulus fibrosus annulus fibrosus ventral mesogastrium ventral mesogastrium common common palatoglossus palatoglossus thalamus thalamus nucleus polposus nucleus polposus middle middle cauda cauda dermomyotome dermomyotome epithelium epithelium telencephalon telencephalon neural crest neural crest laryngeal cartilage laryngeal cartilage malleus cartilage condensation malleus cartilage condensation adrenal gland adrenal gland pharyngo-tympanic tube pharyngo-tympanic tube roof plate roof plate nasal epithelium nasal epithelium right right T1 T1 cardiovascular system cardiovascular system posterior horn posterior horn T3 T3 mesentery mesentery associated mesenchyme associated mesenchyme ovary ovary skin skin lesser horn lesser horn phalanx cartilage condensation phalanx cartilage condensation L3 L3 mesenchyme derived from head mesoderm mesenchyme derived from head mesoderm facial bones facial bones undifferentiated pre-muscle mass undifferentiated pre-muscle mass appendix testis appendix testis left atrium left atrium visceral visceral associated mesenchyme associated mesenchyme skin skin cisterna chiasmatica cisterna chiasmatica floor plate floor plate epithelium epithelium annulus fibrosus annulus fibrosus Tl22 Tl22 lateral wall lateral wall facial ganglion VII facial ganglion VII somite 29 somite 29 myocoele myocoele mesoduodenum mesoduodenum mantle layer mantle layer annulus fibrosus annulus fibrosus T2 T2 germinal epithelium germinal epithelium ventricular layer ventricular layer cardiac muscle cardiac muscle sternebral bone sternebral bone cervical region cervical region rhombomere 02 rhombomere 02 bulboventricular groove bulboventricular groove quadriceps quadriceps vascular element vascular element right right cardiac muscle cardiac muscle otocyst otocyst T11 T11 intermolar eminence intermolar eminence ureteric bud ureteric bud pituitary pituitary epithelium epithelium deltoid pre-muscle mass deltoid pre-muscle mass hepatic artery hepatic artery associated mesenchyme associated mesenchyme main bronchus main bronchus trachea trachea vascular element vascular element ectoderm ectoderm epithelium epithelium mesenchyme mesenchyme duodenal papilla duodenal papilla foregut foregut rhombomere 03 rhombomere 03 rest of hindgut rest of hindgut nucleus polposus nucleus polposus branchial pouch branchial pouch epithelium epithelium floor plate floor plate epithelium epithelium dermis dermis mesenchyme derived from head mesoderm mesenchyme derived from head mesoderm cavity cavity epithelium epithelium epithelium epithelium mantle layer mantle layer lentiform nucleus lentiform nucleus neural crest neural crest vertical component vertical component alveolar sulcus alveolar sulcus phalanx phalanx external ear external ear roof plate roof plate somite 20 somite 20 epithelium epithelium distal distal dermomyotome dermomyotome inter-parietal bone inter-parietal bone phalanx pre-cartilage condensation phalanx pre-cartilage condensation skin skin Tl7 Tl7 lamina terminalis lamina terminalis claw claw neural plate neural plate dorsal part dorsal part roof plate roof plate mantle layer mantle layer floor plate floor plate crus of clitoris crus of clitoris 3rd ventricle 3rd ventricle oronasal cavity oronasal cavity metatarsus cartilage condensation metatarsus cartilage condensation endocardial tube endocardial tube mesenchyme mesenchyme gonad primordium gonad primordium Tl9 Tl9 roof plate roof plate scrotum scrotum vestibular component vestibular component hyoid cartilage pre-cartilage condensation hyoid cartilage pre-cartilage condensation Tl6 Tl6 neural fold neural fold bare area bare area rhombomere 01 rhombomere 01 phalanx pre-cartilage condensation phalanx pre-cartilage condensation vasa efferentia vasa efferentia annulus fibrosus annulus fibrosus mesothelium mesothelium epithelium epithelium sclerotome sclerotome midgut derived large intestine midgut derived large intestine sclerotome sclerotome greater palatine artery greater palatine artery epidermis epidermis epithelium epithelium dermis dermis endocardial tube endocardial tube radius radius S1 S1 gland gland ischial pre-cartilage condensation ischial pre-cartilage condensation vascular element vascular element ischial bone ischial bone cavities and their linings cavities and their linings medulla medulla dorsal mesentery dorsal mesentery nucleus polposus nucleus polposus middle ear middle ear right right anal region anal region annulus fibrosus annulus fibrosus nucleus polposus nucleus polposus mesentery mesentery germinal cells germinal cells mesothelium mesothelium neural fold neural fold basal columns basal columns cavity cavity glossopharyngeal IX preganglion glossopharyngeal IX preganglion skeleton skeleton T1 T1 endoderm endoderm nucleus polposus nucleus polposus T11 T11 skin skin dorsal meso-oesophagus dorsal meso-oesophagus epithelium epithelium lateral wall lateral wall dermis dermis epiglottal primordium epiglottal primordium Tl12 Tl12 somite 38 somite 38 digit 2 digit 2 jejunum jejunum T5 T5 lateral wall lateral wall mesenchyme mesenchyme ventricular layer ventricular layer stem cells stem cells Tl4 Tl4 choroid plexus choroid plexus subcostal artery subcostal artery rib pre-cartilage condensation rib pre-cartilage condensation uncinate process uncinate process nucleus polposus nucleus polposus epithelium epithelium left hepatic recess left hepatic recess mandibular component mandibular component neural luminal occlusion neural luminal occlusion ganglion ganglion T6 T6 cardiac jelly cardiac jelly cisterna chiasmatica cisterna chiasmatica anterior chamber anterior chamber autonomic autonomic T5 T5 humerus humerus right lung rudiment right lung rudiment sclerotome sclerotome epithelium epithelium epithelium epithelium dental lamina dental lamina metanephric mesenchyme metanephric mesenchyme L2 L2 forelimb bud forelimb bud dorsal mesentery dorsal mesentery urorectal septum urorectal septum spinal cord spinal cord vascular element vascular element lumen lumen claw claw mantle layer mantle layer subclavian artery subclavian artery ventricular layer ventricular layer phalanx cartilage condensation phalanx cartilage condensation hepatico-cardiac vein hepatico-cardiac vein C6 C6 L2 L2 hypochordal arch hypochordal arch T10 T10 lesser horn lesser horn external external branchial membrane branchial membrane vertebral cartilage condensation vertebral cartilage condensation ectoderm ectoderm vascular element vascular element thoracic duct thoracic duct colloid-filled follicles colloid-filled follicles epithelium epithelium floor plate floor plate endolymphatic appendage endolymphatic appendage 6th arch artery 6th arch artery lateral wall lateral wall vascular element vascular element 4-8 cell stage 4-8 cell stage upper upper phalanx phalanx cortex cortex left left forebrain forebrain rhombomere 01 rhombomere 01 tubo-tympanic recess tubo-tympanic recess cardiac muscle cardiac muscle T2 T2 external jugular vein external jugular vein somite 57 somite 57 platysma platysma bladder bladder neural crest neural crest epithelium epithelium perineal body perineal body future midbrain future midbrain superior cerebellar artery superior cerebellar artery remnant of Rathke's pouch remnant of Rathke's pouch gluteal gluteal germinal epithelium germinal epithelium genital tubercle genital tubercle parietal pericardium parietal pericardium floor plate floor plate ventricular layer ventricular layer allantois allantois hippocampus hippocampus dura mater dura mater marginal layer marginal layer naso-palatine canal naso-palatine canal vascular element vascular element gland gland intervertebral disc intervertebral disc primitive heart tube primitive heart tube lateral wall lateral wall lateral wall lateral wall iliac cartilage condensation iliac cartilage condensation claw claw mantle layer mantle layer dermomyotome dermomyotome arch of aorta arch of aorta lateral ventricle lateral ventricle blastocoelic cavity blastocoelic cavity epithelium epithelium primordial germ cells primordial germ cells lumen lumen branchial groove branchial groove sphenoidal canal sphenoidal canal ventricular layer ventricular layer phalanx phalanx marginal layer marginal layer inferior inferior roof plate roof plate meninges meninges clitoris clitoris T3 T3 ganglion ganglion dermis dermis filum terminale filum terminale annulus fibrosus annulus fibrosus cardiac jelly cardiac jelly capsule capsule marginal layer marginal layer epithelium epithelium vertebra vertebra oral epithelium oral epithelium endoderm endoderm vascular element vascular element associated mesenchyme associated mesenchyme annulus fibrosus annulus fibrosus marginal layer marginal layer lumen lumen acetabular region acetabular region epithelium epithelium sclerotome sclerotome alar plate alar plate associated mesenchyme associated mesenchyme stomach stomach arterial system arterial system subscapularis pre-muscle mass subscapularis pre-muscle mass sternum sternum integumental system integumental system lateral wall lateral wall marginal layer marginal layer claw claw recurrent laryngeal branch recurrent laryngeal branch syncytiotrophoblast syncytiotrophoblast brachialis brachialis somite 60 somite 60 tunica vaginalis testis tunica vaginalis testis associated mesenchyme associated mesenchyme pineal primordium pineal primordium talus cartilage condensation talus cartilage condensation submandibular gland primordium submandibular gland primordium mesenchyme mesenchyme plantar pads plantar pads phallic part phallic part internal oblique internal oblique primitive endoderm primitive endoderm floor plate floor plate skin skin glandular region glandular region bronchiole bronchiole lateral wall lateral wall foramen caecum foramen caecum S4 S4 extrahepatic part extrahepatic part dura mater dura mater trabeculae carneae trabeculae carneae sclerotome sclerotome palatal shelf palatal shelf T4 T4 lateral wall lateral wall common common teres major teres major mesenchyme mesenchyme lumen lumen inferior sagittal inferior sagittal paraxial mesenchyme paraxial mesenchyme urogenital membrane urogenital membrane hyoid artery hyoid artery skin skin epithelium epithelium dental papilla dental papilla marginal layer marginal layer somite 49 somite 49 Tl7 Tl7 diencephalic part of interventricular foramen diencephalic part of interventricular foramen duodenum duodenum lateral wall lateral wall dorsal mesentery dorsal mesentery rostral half rostral half mesonephros mesonephros sternebral bone pre-cartilage condensation sternebral bone pre-cartilage condensation arytenoid swelling pre-cartilage condensation arytenoid swelling pre-cartilage condensation accessory hemiazygos vein accessory hemiazygos vein internal internal hindgut derived large intestine hindgut derived large intestine pulmonary trunk pulmonary trunk central tendon central tendon maxilla primordium maxilla primordium vertebral pre-cartilage condensation vertebral pre-cartilage condensation neural crest neural crest cruciate ligament cruciate ligament loop loop metacarpus cartilage condensation metacarpus cartilage condensation glans clitoridis glans clitoridis lateral wall lateral wall floor plate floor plate external external sinus sinus orbital fissure orbital fissure ectoderm ectoderm T5 T5 myocoele myocoele early primitive heart tube early primitive heart tube vagal X nerve trunk vagal X nerve trunk hip hip intervertebral disc intervertebral disc radial nerve radial nerve choroid plexus choroid plexus hypobranchial eminence hypobranchial eminence uncinate process uncinate process lobe lobe mesenchyme mesenchyme renal/urinary system renal/urinary system paramesonephric duct paramesonephric duct digit 3 digit 3 perineal body perineal body T6 T6 floor plate floor plate nucleus polposus nucleus polposus compacted morula compacted morula lateral migration pathway lateral migration pathway head head hair hair L1 L1 mesenchymal condensation mesenchymal condensation communicating artery communicating artery T7 T7 endocardial tube endocardial tube skeletal muscle skeletal muscle mantle layer mantle layer alar columns alar columns vibrissa vibrissa aortic valve aortic valve Tl3 Tl3 arm arm mesenchyme derived from neural crest mesenchyme derived from neural crest eye eye annulus fibrosus annulus fibrosus oral region oral region T2 T2 skeletal muscle skeletal muscle parenchyma parenchyma Tl19 Tl19 phalanx phalanx epithelium epithelium rest of mesenchyme rest of mesenchyme gland gland vascular element vascular element pectoral girdle and thoracic body wall pectoral girdle and thoracic body wall surface ectoderm surface ectoderm cervico-thoracic cervico-thoracic enamel organ enamel organ rest of skin rest of skin epigastric artery epigastric artery associated mesenchyme associated mesenchyme somite 58 somite 58 external external exoccipital cartilage condensation exoccipital cartilage condensation nucleus polposus nucleus polposus somite 37 somite 37 facio-acoustic VII-VIII preganglion complex facio-acoustic VII-VIII preganglion complex L1 L1 superior superior ascending aorta ascending aorta incus cartilage condensation incus cartilage condensation neural fold neural fold pharyngeal tubercle pharyngeal tubercle pulmonary component pulmonary component skin skin dermomyotome dermomyotome ureter ureter primary oocytes primary oocytes epithelium epithelium colloid-filled follicles colloid-filled follicles future rhombencephalon future rhombencephalon maxillary artery maxillary artery middle middle myocoele myocoele ventricular layer ventricular layer T1 T1 ventral grey horn ventral grey horn infundibular recess of 3rd ventricle infundibular recess of 3rd ventricle superficial muscle superficial muscle facial bones primordia facial bones primordia temporal bone temporal bone mesentery mesentery roof plate roof plate Tl18 Tl18 sclerotome sclerotome epidermis epidermis metatarsus metatarsus hilum hilum meatus meatus gum gum inferior inferior ectoderm ectoderm endoderm endoderm associated mesenchyme associated mesenchyme associated mesenchyme associated mesenchyme dorsal meso-oesophagus dorsal meso-oesophagus cavities and their linings cavities and their linings psoas major psoas major epidermis epidermis rhombomere 07 rhombomere 07 mesenchyme mesenchyme Sertoli cells Sertoli cells associated mesenchyme associated mesenchyme elbow joint elbow joint annulus fibrosus annulus fibrosus islets of Langerhans islets of Langerhans vagus X vagus X primordial germ cells primordial germ cells epithelium epithelium cardiac muscle cardiac muscle mesenchyme mesenchyme meninges meninges associated mesenchyme associated mesenchyme pectinate line pectinate line skin skin glandular mucous membrane glandular mucous membrane T13 T13 apical ectodermal ridge apical ectodermal ridge annulus fibrosus annulus fibrosus filiform papillae filiform papillae dorsal mesentery dorsal mesentery hamstring hamstring intraretinal space intraretinal space pubic pre-cartilage condensation pubic pre-cartilage condensation suspensory ligament of ovary suspensory ligament of ovary metatarsus pre-cartilage condensation metatarsus pre-cartilage condensation myocoele myocoele mesentery mesentery laryngo-tracheal groove laryngo-tracheal groove nucleus polposus nucleus polposus epithelium epithelium endocardial lining endocardial lining ectoderm ectoderm epithelium epithelium mantle layer mantle layer myocoele myocoele choroid plexus choroid plexus carpus cartilage condensation carpus cartilage condensation gland gland radius radius endocardial lining endocardial lining mesenchyme mesenchyme yolk sac cavity yolk sac cavity left left enamel organ enamel organ lateral wall lateral wall alimentary system alimentary system mesenchyme mesenchyme superior superior dermomyotome dermomyotome vertebral cartilage condensation vertebral cartilage condensation nucleus polposus nucleus polposus Tl20 Tl20 ventral ventral haemolymphoid system haemolymphoid system caudate nucleus caudate nucleus lens pit lens pit nucleus polposus nucleus polposus pituitary pituitary ectoderm ectoderm mesenchyme mesenchyme subarachnoid space subarachnoid space vascular element vascular element oral cavity oral cavity L1 L1 dermomyotome dermomyotome lateral wall lateral wall mesenchyme derived from splanchnopleure mesenchyme derived from splanchnopleure endoderm endoderm superior superior T1 T1 rest of cerebellum rest of cerebellum inferior inferior respiratory respiratory epidermis epidermis ulna ulna phalanx phalanx segmental spinal nerve segmental spinal nerve pyloric antrum pyloric antrum cervical sinus cervical sinus quadrate lobe quadrate lobe dorsal mesocardium dorsal mesocardium foramen ovale foramen ovale mesenchyme mesenchyme ventricular layer ventricular layer alveolar duct alveolar duct extrinsic ocular pre-muscle mass extrinsic ocular pre-muscle mass vascular element vascular element mesenchyme mesenchyme perioptic mesenchyme perioptic mesenchyme ventricular layer ventricular layer mesenchyme mesenchyme marginal layer marginal layer interdigital region between digits 4 and 5 interdigital region between digits 4 and 5 vascular element vascular element intercostal artery intercostal artery interdigital region between digits 2 and 3 interdigital region between digits 2 and 3 nucleus polposus nucleus polposus distal region distal region mesenchyme mesenchyme somite 09 somite 09 soft palate soft palate visceral pericardium visceral pericardium quadratus lumborum quadratus lumborum lateral wall lateral wall lingual vein lingual vein greater sac greater sac somite 48 somite 48 hepatic sinusoids hepatic sinusoids dermomyotome dermomyotome skeleton skeleton floor plate floor plate extrinsic extrinsic ventricular layer ventricular layer endocardial lining endocardial lining 3rd arch artery 3rd arch artery basal plate basal plate 1st branchial membrane 1st branchial membrane transverse component transverse component dermomyotome dermomyotome lobar bronchus lobar bronchus internal internal posterior suture posterior suture dura mater dura mater mesothelium mesothelium pyloric region pyloric region dorsal pancreatic duct dorsal pancreatic duct neural fold neural fold cricothyroid cricothyroid nucleus polposus nucleus polposus calyces calyces tricuspid valve tricuspid valve arachnoid mater arachnoid mater vascular element vascular element epithelium epithelium pubic bone pubic bone roof plate roof plate T10 T10 epidermis epidermis somite 26 somite 26 eyelid eyelid marginal vein of forelimb marginal vein of forelimb optic chiasma optic chiasma T8 T8 floor plate floor plate sclerotome sclerotome nervous system nervous system epithelium epithelium umbilical vein umbilical vein metatarsus pre-cartilage condensation metatarsus pre-cartilage condensation claw claw vascular element vascular element mantle layer mantle layer sclerotome sclerotome primary head vein primary head vein penis penis dome dome T9 T9 cavity cavity palmar pads palmar pads vascular element vascular element epidermis epidermis spinal cord spinal cord nerve plexus nerve plexus neural fold neural fold fibula fibula gall bladder primordium gall bladder primordium associated mesenchyme associated mesenchyme dorsal pancreatic duct dorsal pancreatic duct mesoderm mesoderm Tl8 Tl8 orbito-sphenoid orbito-sphenoid hypothalamus hypothalamus Tl11 Tl11 outflow tract outflow tract lip lip epithelium epithelium mesenchyme condensation mesenchyme condensation cytotrophoblast cytotrophoblast phalanx phalanx T11 T11 mesothelium mesothelium flexor digitorum profundus flexor digitorum profundus tensor tympani muscle tensor tympani muscle molar molar epithelium epithelium mesenchyme mesenchyme dorsal mesentery dorsal mesentery colon colon hilus hilus 1st arch 1st arch epithelium epithelium annulus fibrosus annulus fibrosus anterior fontanelle anterior fontanelle thymus primordium thymus primordium somite 59 somite 59 mesenchyme mesenchyme seminal vesicle seminal vesicle mantle layer mantle layer parenchyma parenchyma ventricular layer ventricular layer external oblique external oblique saccule saccule T10 T10 sclerotome sclerotome ventricular layer ventricular layer epidermis epidermis pyloric antrum pyloric antrum cardinal vein cardinal vein infundibulum infundibulum ascending ascending carotid artery carotid artery common common epithelium epithelium mesentery mesentery epithelium epithelium dermomyotome dermomyotome interdigital region between digits 1 and 2 interdigital region between digits 1 and 2 ganglion ganglion alveolus alveolus C5 C5 dermomyotome dermomyotome crus crus skeletal muscle skeletal muscle associated mesenchyme associated mesenchyme median sacral artery median sacral artery phalanx cartilage condensation phalanx cartilage condensation azygos vein azygos vein myocoele myocoele epithelium epithelium endoderm endoderm somite 14 somite 14 footplate footplate lower lower mesenchyme derived from neural crest mesenchyme derived from neural crest vestibular component vestibular component right right mesentery mesentery arcuate ligaments arcuate ligaments pericardio-peritoneal component pericardio-peritoneal component epithelium epithelium Tl23 Tl23 dermomyotome dermomyotome nerve plexus nerve plexus left left right right nucleus pulposus nucleus pulposus vascular element vascular element future forebrain future forebrain diencephalon diencephalon axillary artery axillary artery craniopharyngeal canal craniopharyngeal canal phalanx cartilage condensation phalanx cartilage condensation glandular mucous membrane glandular mucous membrane leg leg mesenchyme mesenchyme future Leydig cells future Leydig cells nucleus polposus nucleus polposus bare area bare area vertebral pre-cartilage condensation vertebral pre-cartilage condensation foramen rotundum foramen rotundum cornea cornea Tl4 Tl4 alveolus alveolus drainage component drainage component internal internal head mesenchyme head mesenchyme annulus fibrosus annulus fibrosus sclerotome sclerotome epithelium epithelium dental papilla dental papilla gland gland myocoele myocoele skeletal muscle skeletal muscle tunica vasculosa lentis tunica vasculosa lentis digit 1 digit 1 mesenchyme mesenchyme mantle layer mantle layer epidermis epidermis supraspinatus supraspinatus skin skin choroid plexus choroid plexus tubule tubule extrinsic ocular muscle extrinsic ocular muscle myocoele myocoele scapula pre-cartilage condensation scapula pre-cartilage condensation ventral mesentery ventral mesentery mantle layer mantle layer sublingual gland primordium sublingual gland primordium hemiazygos vein hemiazygos vein associated mesenchyme associated mesenchyme epithelium epithelium basioccipital pre-cartilage condensation basioccipital pre-cartilage condensation sublingual gland sublingual gland nucleus polposus nucleus polposus marginal layer marginal layer mesenchyme mesenchyme bronchiole bronchiole rhombomere 08 rhombomere 08 epidermis epidermis Tl27 Tl27 Tl5 Tl5 tongue tongue mantle layer mantle layer amniotic fold amniotic fold hepatic component hepatic component caudate-putamen caudate-putamen nucleus polposus nucleus polposus ventricular layer ventricular layer cardiac muscle cardiac muscle sphincter of Oddi sphincter of Oddi metacarpo-phalangeal metacarpo-phalangeal T2 T2 cavity cavity Tl9 Tl9 associated mesenchyme associated mesenchyme associated mesenchyme associated mesenchyme ectoderm ectoderm interdigital region between digits 3 and 4 interdigital region between digits 3 and 4 lens vesicle lens vesicle petrous part petrous part meninges meninges basal columns basal columns vasa hyaloidea propria vasa hyaloidea propria metacarpus metacarpus prosencephalic vesicle prosencephalic vesicle mesenchyme mesenchyme epithelium epithelium Tl12 Tl12 branchial pouch branchial pouch dermis dermis squamo-parietal suture squamo-parietal suture dermis dermis genital tubercle genital tubercle digit 1 digit 1 dental lamina dental lamina epithelium epithelium pleuro-pericardial canal pleuro-pericardial canal lateral wall lateral wall mammary gland mammary gland septum transversum septum transversum inner layer inner layer associated mesenchyme associated mesenchyme rete ovarii rete ovarii associated mesenchyme associated mesenchyme associated mesenchyme associated mesenchyme lumen lumen left part left part annulus fibrosus annulus fibrosus peripheral nervous system peripheral nervous system alveolar system alveolar system epidermis epidermis fundus region fundus region cystic vesicular appendage cystic vesicular appendage phalanx pre-cartilage condensation phalanx pre-cartilage condensation vascular element vascular element floorplate floorplate roof plate roof plate rest of epithelium rest of epithelium T8 T8 epithelium epithelium sclerotome sclerotome associated mesenchyme associated mesenchyme phalanx phalanx arachnoid mater arachnoid mater Tl9 Tl9 neural fold neural fold somite 25 somite 25 anterior anterior myocoele myocoele lumen lumen C7 C7 ectoderm ectoderm squamous part squamous part phrenic phrenic rib cartilage condensation rib cartilage condensation optic II optic II mitral valve mitral valve isthmus isthmus glandular mucous membrane glandular mucous membrane right right hindgut hindgut T12 T12 sclerotome sclerotome parotid parotid C6 C6 epithelium epithelium dermis dermis T4 T4 respiratory system respiratory system pharynx pharynx pharyngeal region pharyngeal region roof plate roof plate mantle layer mantle layer floor plate floor plate glossopharyngeal IX glossopharyngeal IX dermis dermis marginal layer marginal layer ventricular layer ventricular layer sclerotome sclerotome dermomyotome dermomyotome incus pre-cartilage condensation incus pre-cartilage condensation tubule tubule brown fat brown fat ectoderm ectoderm epithalamus epithalamus Tl14 Tl14 mantle layer mantle layer cardiac jelly cardiac jelly mesenchyme mesenchyme parenchyma parenchyma superior superior alveolus alveolus roof plate roof plate vascular element vascular element intraembryonic coelom intraembryonic coelom ventricular layer ventricular layer nucleus polposus nucleus polposus venous system venous system rest of midgut rest of midgut metacarpus metacarpus dermomyotome dermomyotome brain brain ectoderm ectoderm myocoele myocoele within amniotic fold within amniotic fold umbilical artery umbilical artery telencephalic part of interventricular foramen telencephalic part of interventricular foramen mesenchyme mesenchyme notochord notochord coeliac trunk coeliac trunk metanephros metanephros carpus pre-cartilage condensation carpus pre-cartilage condensation aditus aditus future spinal cord future spinal cord annulus fibrosus annulus fibrosus neural crest neural crest vascular element vascular element ventricular layer ventricular layer adenohypophysis adenohypophysis zona pellucida zona pellucida tibia tibia skin skin myocoele myocoele epithelium epithelium floor plate floor plate marginal layer marginal layer nephric cord nephric cord claw primordium claw primordium epithelium epithelium dermis dermis intercostal vein intercostal vein clavicle cartilage condensation clavicle cartilage condensation diaphragm diaphragm cardiogenic plate cardiogenic plate lobar bronchus lobar bronchus T7 T7 stroma stroma zona pellucida zona pellucida mesentery mesentery nephrons nephrons axial muscle axial muscle Tl22 Tl22 labyrinth labyrinth somite 39 somite 39 costo-vertebral joint costo-vertebral joint bronchiole bronchiole roof plate roof plate mesenchyme mesenchyme primitive streak primitive streak skin skin left left epiglottis epiglottis endocardial tube endocardial tube facio-acoustic neural crest facio-acoustic neural crest sclerotome sclerotome Tl14 Tl14 annulus fibrosus annulus fibrosus nucleus polposus nucleus polposus post-ductal part of thoracic aorta post-ductal part of thoracic aorta hypoglossal canal hypoglossal canal umbilical vein umbilical vein mesencephalic vesicle mesencephalic vesicle left horn left horn caudal half caudal half myocoele myocoele posterior epithelium posterior epithelium skeleton skeleton mesenchyme mesenchyme rest of upper lip rest of upper lip right auricular region right auricular region alveolar system alveolar system median fibrous septum median fibrous septum gall bladder primordium gall bladder primordium leg leg ventricular layer ventricular layer paraxial mesenchyme paraxial mesenchyme mesenchyme mesenchyme arachnoid mater arachnoid mater proventricular region proventricular region phalanx pre-cartilage condensation phalanx pre-cartilage condensation S2 S2 mesenchyme mesenchyme mesenchyme mesenchyme temporal bone temporal bone innominate artery innominate artery mesentery mesentery phalanx phalanx Tl3 Tl3 mesenchyme derived from neural crest mesenchyme derived from neural crest external auditory meatus external auditory meatus optic foramen optic foramen phalanx cartilage condensation phalanx cartilage condensation mesothelium mesothelium apical ectodermal ridge apical ectodermal ridge primordial germ cells primordial germ cells cavernous cavernous basioccipital bone basioccipital bone inguinal canal inguinal canal bulbus cordis bulbus cordis stapedial artery stapedial artery prostatic region prostatic region gland gland right right Tl31 Tl31 epithelium epithelium premaxilla premaxilla mesenchyme mesenchyme principal vein of forelimb principal vein of forelimb somite 47 somite 47 parietal parietal Bowman's capsule Bowman's capsule incomplete urorectal septum incomplete urorectal septum vertical component vertical component mesenchyme derived from neural crest mesenchyme derived from neural crest pyloric region pyloric region cardiac muscle cardiac muscle medullary tubules medullary tubules ossicle ossicle floor plate floor plate medial medial tentorium cerebelli tentorium cerebelli rostral part rostral part cardiac muscle cardiac muscle mantle layer mantle layer hyaloid artery hyaloid artery lobe lobe lateral wall lateral wall T3 T3 myocoele myocoele dermomyotome dermomyotome alveolar system alveolar system endolymphatic sac endolymphatic sac stapes pre-cartilage condensation stapes pre-cartilage condensation vitreous humour vitreous humour roof plate roof plate mandibular canal mandibular canal utricle utricle philtrum philtrum primitive ureter primitive ureter floor plate floor plate ventricular layer ventricular layer other mesenchyme other mesenchyme L3 L3 hindbrain hindbrain Tl11 Tl11 mesenchyme mesenchyme testis testis primordial germ cells primordial germ cells left left sclerotome sclerotome nervous system nervous system L5 L5 medial migration pathway medial migration pathway bare area bare area dorsal mesentery dorsal mesentery anterior horn anterior horn radius-ulna pre-cartilage condensation radius-ulna pre-cartilage condensation metacarpus metacarpus notochordal plate notochordal plate humerus cartilage condensation humerus cartilage condensation skin skin leaflets leaflets foramen ovale foramen ovale floor plate floor plate branchial arch artery branchial arch artery mesenchyme mesenchyme endocardial lining endocardial lining Tl16 Tl16 endocardial tube endocardial tube somite 56 somite 56 cervical sinus cervical sinus epithelium epithelium atrium atrium somite 07 somite 07 vestibulocochlear VIII vestibulocochlear VIII parenchyma parenchyma venous valve venous valve erector spinae erector spinae pleural cavity pleural cavity annulus fibrosus annulus fibrosus floor plate floor plate mesentery mesentery T6 T6 inferior inferior adductor group adductor group C2 C2 floorplate floorplate marginal layer marginal layer thoracic region thoracic region glossopharyngeal IX glossopharyngeal IX Tl8 Tl8 dermis dermis epidermis epidermis annulus fibrosus annulus fibrosus proximal proximal epithelium epithelium Tl2 Tl2 mantle layer mantle layer sclerotome sclerotome tooth tooth mesenchyme mesenchyme sphenoid bone pre-cartilage condensation sphenoid bone pre-cartilage condensation iliac bone iliac bone epithelium epithelium dermis dermis skin skin alveolar duct alveolar duct epithelium epithelium posterior posterior mesentery mesentery olfactory I olfactory I T9 T9 lumen lumen renal artery renal artery floor plate floor plate aorta aorta C3 C3 cardiac jelly cardiac jelly intermolar eminence intermolar eminence branchial pouch branchial pouch interdigital region between digits 4 and 5 interdigital region between digits 4 and 5 lumen lumen mesothelial lining mesothelial lining organ system organ system triceps triceps Tl7 Tl7 mesenchyme mesenchyme jejunum jejunum annulus fibrosus annulus fibrosus dermomyotome dermomyotome T6 T6 lamina terminalis lamina terminalis epithelium epithelium sclerotome sclerotome rostral half rostral half vertebral cartilage condensation vertebral cartilage condensation optic vesicle optic vesicle cochlear duct cochlear duct dermis dermis mesenchyme derived from neural crest mesenchyme derived from neural crest cardiac muscle cardiac muscle vascular element vascular element internal capsule internal capsule extraembryonic component of the proamniotic cavity extraembryonic component of the proamniotic cavity Tl13 Tl13 metacarpus cartilage condensation metacarpus cartilage condensation accessory XI accessory XI mesentery mesentery pyloric sphincter pyloric sphincter dermomyotome dermomyotome epithelium epithelium stomatodaeum stomatodaeum rib rib epithelium epithelium fundus fundus reproductive system reproductive system mesothelium mesothelium sternothyroid sternothyroid intermediate anuclear layer intermediate anuclear layer vocal folds vocal folds C7 C7 mesenchyme mesenchyme skin skin metanephros metanephros subarachnoid space subarachnoid space basal cistern basal cistern foramen primum foramen primum mantle layer mantle layer intrahepatic part intrahepatic part basisphenoid cartilage condensation basisphenoid cartilage condensation Tl21 Tl21 epidermis epidermis lumen lumen dermis dermis epidermis epidermis nasal septum nasal septum T12 T12 musculo-phrenic artery musculo-phrenic artery sensory organ sensory organ epithelium epithelium inferior inferior sclerotome sclerotome neural crest neural crest epithelium epithelium rhombomere 01 rhombomere 01 L6 L6 floor plate floor plate T9 T9 mesenchyme derived from neural crest mesenchyme derived from neural crest myocoele myocoele mantle layer mantle layer nucleus polposus nucleus polposus dermomyotome dermomyotome epithelium epithelium gland gland endocardial tissue endocardial tissue body body caudal part caudal part cerebral cortex cerebral cortex hindlimb bud hindlimb bud collecting ducts collecting ducts rhombomere 02 rhombomere 02 caudal lobe caudal lobe lateral lateral marginal layer marginal layer aortic component aortic component Tl6 Tl6 phalanx pre-cartilage condensation phalanx pre-cartilage condensation brain brain temporo-mandibular joint primordium temporo-mandibular joint primordium medulla oblongata medulla oblongata valve valve male male alar plate alar plate marginal layer marginal layer inferior inferior roof plate roof plate mesenchyme mesenchyme endolymphatic duct endolymphatic duct associated mesenchyme associated mesenchyme thyroid primordium thyroid primordium somite 46 somite 46 L2 L2 dermis dermis ventricular layer ventricular layer neural tube neural tube post-hepatic part post-hepatic part lateral wall lateral wall corpus corpus dorsal root ganglion dorsal root ganglion femur femur calcaneum calcaneum pars anterior pars anterior iris iris deep dorsal vein of clitoris deep dorsal vein of clitoris associated mesenchyme associated mesenchyme olfactory placode olfactory placode floor plate floor plate gubernaculum gubernaculum dermomyotome dermomyotome mesenchyme mesenchyme skin skin wall wall phalanx pre-cartilage condensation phalanx pre-cartilage condensation lateral wall lateral wall hard palate hard palate mantle layer mantle layer intersegmental artery intersegmental artery metatarsus cartilage condensation metatarsus cartilage condensation floor plate floor plate mesenchyme mesenchyme arm arm mesenchyme mesenchyme sclerotome sclerotome vagina vagina non-hilar region non-hilar region posterior posterior lateral wall lateral wall masseter masseter dermomyotome dermomyotome skin skin notochordal process notochordal process mesenchyme mesenchyme superior semicircular canal superior semicircular canal digit 2 digit 2 associated mesenchyme associated mesenchyme somite 08 somite 08 claw claw skeletal muscle skeletal muscle pancreas pancreas lower lower triceps triceps metacarpus pre-cartilage condensation metacarpus pre-cartilage condensation mesenchyme derived from head mesoderm mesenchyme derived from head mesoderm talus pre-cartilage condensation talus pre-cartilage condensation anterior abdominal wall anterior abdominal wall T12 T12 rest of basal plate rest of basal plate apical ectodermal ridge apical ectodermal ridge epithelium epithelium duodenum duodenum first polar body first polar body dermomyotome dermomyotome medullay core medullay core ventricular layer ventricular layer rete testis rete testis floor plate floor plate foregut-midgut junction foregut-midgut junction naso-lacrimal duct naso-lacrimal duct elbow joint primordium elbow joint primordium somite 55 somite 55 mesenchyme derived from head mesoderm mesenchyme derived from head mesoderm T10 T10 ovarian artery ovarian artery cortex cortex nucleus polposus nucleus polposus T9 T9 epidermis epidermis annulus fibrosus annulus fibrosus L4 L4 yolk sac yolk sac mesenchyme derived from neural crest mesenchyme derived from neural crest rest of foregut rest of foregut dorsal meso-oesophagus dorsal meso-oesophagus vascular element vascular element T13 T13 2nd arch artery 2nd arch artery mantle layer mantle layer mesenchyme mesenchyme mantle layer mantle layer phalanx phalanx sclerotome sclerotome endoderm endoderm epidermis epidermis mesenchyme mesenchyme follicle follicle nasopharynx nasopharynx nucleus polposus nucleus polposus 3rd arch 3rd arch left left right horn right horn T5 T5 Tl7 Tl7 roof plate roof plate root sheath root sheath foramen caecum foramen caecum dorsal mesentery dorsal mesentery annulus fibrosus annulus fibrosus hyaloid cavity hyaloid cavity mesenchyme mesenchyme outflow tract outflow tract right right circumvallate papilla circumvallate papilla T10 T10 Tl20 Tl20 endoderm endoderm epithelium epithelium peripheral nervous system peripheral nervous system pancreas primordium pancreas primordium alveolar duct alveolar duct Tl15 Tl15 nucleus polposus nucleus polposus associated mesenchyme associated mesenchyme rest of skin rest of skin leaflets leaflets C4 C4 vagus X preganglion vagus X preganglion myocoele myocoele floor plate floor plate parenchyma parenchyma internal sphincter internal sphincter mesenchyme derived from neural-crest mesenchyme derived from neural-crest T7 T7 annulus fibrosus annulus fibrosus posterior fontanelle posterior fontanelle neural tube neural tube ectoderm ectoderm allantois allantois internal jugular vein internal jugular vein medullary raphe medullary raphe omental bursa omental bursa phalanx cartilage condensation phalanx cartilage condensation endocardial lining endocardial lining parenchyma parenchyma head head parietal parietal Tl16 Tl16 Tl8 Tl8 medial-nasal process medial-nasal process inner ear inner ear intrinsic ocular muscle intrinsic ocular muscle telencephalon telencephalon epithelium epithelium radius-ulna cartilage condensation radius-ulna cartilage condensation posterior semicircular canal posterior semicircular canal sterno-mastoid sterno-mastoid ventral pancreatic duct ventral pancreatic duct cartilage cartilage respiratory tract respiratory tract humerus pre-cartilage condensation humerus pre-cartilage condensation ganglion ganglion myocoele myocoele phalanx phalanx midbrain midbrain organ of Corti organ of Corti epithelium epithelium lateral wall lateral wall lymphatic system lymphatic system C7 C7 transverse pericardial sinus transverse pericardial sinus panniculus carnosus group panniculus carnosus group mandible primordium mandible primordium somite 45 somite 45 ectoplacental cone ectoplacental cone neural fold neural fold rhombomere 02 rhombomere 02 annulus fibrosus annulus fibrosus median fibrous septum median fibrous septum urethral plate urethral plate metencephalon metencephalon somite 19 somite 19 common atrial chamber common atrial chamber viscerocranium viscerocranium associated mesenchyme associated mesenchyme anal canal anal canal abdominal aorta abdominal aorta limb limb sclerotome sclerotome endoderm endoderm Tl5 Tl5 mesenchyme derived from somatopleure mesenchyme derived from somatopleure skeleton skeleton right part right part external external mesonephros mesonephros roof plate roof plate optic stalk optic stalk pterygoid pterygoid metacarpus metacarpus membranous part membranous part isthmus isthmus L1 L1 ventricular layer ventricular layer humerus humerus muscular part muscular part upper arm upper arm rest of mesenchyme rest of mesenchyme spiral organ of Corti spiral organ of Corti suspensory ligament of testis suspensory ligament of testis marginal layer marginal layer lumen lumen dermis dermis proventricular region proventricular region Tl27 Tl27 intermediate mesenchyme intermediate mesenchyme second polar body second polar body corpus striatum corpus striatum maxilla maxilla hepatic sinusoids hepatic sinusoids dorsal mesentery dorsal mesentery visceral visceral lumbar artery lumbar artery ectoderm ectoderm anterior epithelium anterior epithelium nucleus polposus nucleus polposus future brain future brain interdigital region between digits 2 and 3 interdigital region between digits 2 and 3 somite 05 somite 05 T4 T4 early hindbrain neural ectoderm early hindbrain neural ectoderm ventricular layer ventricular layer spinal spinal pronephros pronephros intrinsic intrinsic associated mesenchyme associated mesenchyme vitelline artery vitelline artery deltoid deltoid haemolymphoid system haemolymphoid system lateral wall lateral wall mesentery mesentery ventricular layer ventricular layer bulb bulb myocoele myocoele Tl4 Tl4 fundus fundus myocoele myocoele dorsal pancreatic duct dorsal pancreatic duct incisor incisor metatarsus cartilage condensation metatarsus cartilage condensation associated mesenchyme associated mesenchyme incisor incisor dermomyotome dermomyotome myocoele myocoele sclerotome sclerotome cartilaginous ring cartilaginous ring lateral recess lateral recess somite 44 somite 44 endocardial tube endocardial tube subarachnoid space subarachnoid space thymus thymus cardiac jelly cardiac jelly cardiovascular system cardiovascular system upper jaw upper jaw tail tail vascular element vascular element choroid fissure choroid fissure otic placode otic placode neural crest neural crest arytenoid cartilage arytenoid cartilage endoderm endoderm alveolar sulcus alveolar sulcus associated mesenchyme associated mesenchyme naso-lacrimal groove naso-lacrimal groove mesenchyme derived from neural crest mesenchyme derived from neural crest Tl26 Tl26 somite 54 somite 54 epidermis epidermis Tl13 Tl13 central nervous system central nervous system roof roof mesenchyme mesenchyme T11 T11 carpus carpus epithelium epithelium transversus thoracis transversus thoracis ductus caroticus ductus caroticus lens placode lens placode bulbar cushion bulbar cushion C4 C4 clavicle pre-cartilage condensation clavicle pre-cartilage condensation hypoglossal XII hypoglossal XII median eminence median eminence caudal neuropore caudal neuropore associated mesenchyme associated mesenchyme mesenchyme mesenchyme mantle layer mantle layer greater sac greater sac Meckel's cartilage Meckel's cartilage vascular element vascular element skeletal muscle skeletal muscle temporo-mandibular joint temporo-mandibular joint nucleus polposus nucleus polposus aqueous humour aqueous humour lower leg lower leg phalanx phalanx tympanic ring tympanic ring hindlimb hindlimb telencephalic vesicle telencephalic vesicle lumen lumen mesenchyme derived from head mesoderm mesenchyme derived from head mesoderm ectoderm ectoderm phalanx pre-cartilage condensation phalanx pre-cartilage condensation sclerotome sclerotome ventricular layer ventricular layer left left vertebral axis muscle system vertebral axis muscle system roof plate roof plate T8 T8 fibular cartilage condensation fibular cartilage condensation neural fold neural fold neural fold neural fold superior superior ethmoid bone primordium ethmoid bone primordium turbinate turbinate C6 C6 neural crest neural crest lumen lumen medulla medulla descending descending carina tracheae carina tracheae hyoglossus hyoglossus vascular element vascular element future midbrain future midbrain primitive endoderm primitive endoderm T9 T9 superior recess superior recess conjunctival sac conjunctival sac mantle layer mantle layer ventricular layer ventricular layer median nerve median nerve skin skin primordial germ cells primordial germ cells visceral endoderm visceral endoderm dorsal mesentery dorsal mesentery marginal layer marginal layer gum gum sterno-clavicular joint sterno-clavicular joint mesenchyme mesenchyme mesenchyme mesenchyme visceral visceral mantle layer mantle layer epithelium epithelium dermomyotome dermomyotome facio-acoustic ganglion complex VII-VIII facio-acoustic ganglion complex VII-VIII interventricular groove interventricular groove gluteus medius gluteus medius Tl15 Tl15 ventricular layer ventricular layer left left superior superior epithelium epithelium C5 C5 metopic suture metopic suture somite 21 somite 21 Tl3 Tl3 interdigital region between digits 3 and 4 interdigital region between digits 3 and 4 bulbo-ventricular region bulbo-ventricular region alveolar system alveolar system polar trophectoderm polar trophectoderm tail tail ejaculatory duct ejaculatory duct epithelium epithelium S2 S2 roof plate roof plate epithelium epithelium bulbar ridge bulbar ridge associated mesenchyme associated mesenchyme venous system venous system jugular lymph sac jugular lymph sac neural ectoderm neural ectoderm metatarsus metatarsus epidermis epidermis nucleus polposus nucleus polposus dermis dermis premaxilla premaxilla hepatic primordium hepatic primordium primitive ventricle primitive ventricle skeletal muscle skeletal muscle tegmentum tegmentum cortical region cortical region mantle layer mantle layer gall bladder gall bladder outer layer outer layer hyoid bone cartilage condensation hyoid bone cartilage condensation Tl11 Tl11 oculomotor III oculomotor III endoderm endoderm floor plate floor plate nucleus polposus nucleus polposus myocoele myocoele fibrous pericardium fibrous pericardium L4 L4 interatrial septum interatrial septum myocoele myocoele choroidal blood vessels choroidal blood vessels dermomyotome dermomyotome superior superior mesenchyme mesenchyme epidermis epidermis pancreas pancreas alveolar system alveolar system urachus urachus mesenchyme mesenchyme neural ectoderm neural ectoderm cardiac muscle cardiac muscle marginal layer marginal layer lesser omentum lesser omentum L6 L6 zygomatic process zygomatic process endocardial cushion tissue endocardial cushion tissue associated mesenchyme associated mesenchyme lumen lumen tibia-fibular pre-cartilage condensation tibia-fibular pre-cartilage condensation cardiac jelly cardiac jelly ventricular layer ventricular layer associated mesenchyme associated mesenchyme 2nd arch artery 2nd arch artery mesenchyme mesenchyme T5 T5 sclerotome sclerotome vascular element vascular element auricular region auricular region testicular vein testicular vein visceral visceral lumen lumen sclerotome sclerotome myocoele myocoele non-neural ectoderm non-neural ectoderm Tl18 Tl18 premaxilla premaxilla Tl26 Tl26 phalanx phalanx mesentery mesentery pericardium pericardium bulbo-urethral gland bulbo-urethral gland 3rd ventricle 3rd ventricle epithelium epithelium dermomyotome dermomyotome epithelium epithelium sclerotome sclerotome ureteric bud ureteric bud dorsal mesentery dorsal mesentery T9 T9 marginal layer marginal layer hindbrain hindbrain epithelium epithelium mesoderm mesoderm rest of mesenchyme rest of mesenchyme rhombomere 03 rhombomere 03 tempero-mandibular joint tempero-mandibular joint thymus primordium thymus primordium transverse transverse vascular element vascular element rete testis rete testis endothelium endothelium mesenchyme mesenchyme mantle layer mantle layer equatorial epithelium equatorial epithelium dermis dermis somite 06 somite 06 vertebral pre-cartilage condensation vertebral pre-cartilage condensation Descemet's membrane Descemet's membrane epithelium epithelium axillary nerve axillary nerve epidermal component epidermal component skeletal muscle skeletal muscle epithelium epithelium thyroid thyroid myocoele myocoele annulus fibrosus annulus fibrosus hyoglossus hyoglossus Tl23 Tl23 ligamentum patellae ligamentum patellae penile region penile region arytenoid arytenoid associated mesenchyme associated mesenchyme mesenchyme derived from splanchnopleure mesenchyme derived from splanchnopleure cardiac muscle cardiac muscle associated mesenchyme associated mesenchyme cavity cavity T11 T11 lieno-renal ligament lieno-renal ligament epicranial aponeurosis epicranial aponeurosis gland gland leaflets leaflets rostral part rostral part alar plate alar plate annulus fibrosus annulus fibrosus gut gut extrinsic pre-muscle mass extrinsic pre-muscle mass lumen lumen stomach stomach brachial plexus brachial plexus somite 17 somite 17 thoracic aorta thoracic aorta principal vein of hindlimb principal vein of hindlimb T10 T10 mesonephric duct mesonephric duct annulus fibrosus annulus fibrosus medullary region medullary region ligamentum nuchae ligamentum nuchae other part other part bronchial artery bronchial artery genioglossus genioglossus mesenteric vein mesenteric vein lobar bronchus lobar bronchus common atrial chamber common atrial chamber chorda tympani branch chorda tympani branch C3 C3 olfactory pit olfactory pit sclerotome sclerotome skin skin endocardial lining endocardial lining arachnoid mater arachnoid mater femoral vein femoral vein alveolar sulcus alveolar sulcus Tl1 Tl1 somite 53 somite 53 rhombomere 06 rhombomere 06 epithelium epithelium non-specific mesenchyme non-specific mesenchyme mesentery mesentery fronto-nasal process fronto-nasal process mesenchyme mesenchyme epithelium epithelium sclerotome sclerotome internal thoracic vein internal thoracic vein hepatic duct hepatic duct arytenoid swelling cartilage condensation arytenoid swelling cartilage condensation C6 C6 phalanx phalanx C5 C5 dentate gyrus dentate gyrus Tl16 Tl16 sclerotome sclerotome ventricular layer ventricular layer dermomyotome dermomyotome cavity cavity mesenchyme mesenchyme sclerotome sclerotome ciliary ganglion ciliary ganglion common common vertebral cartilage condensation vertebral cartilage condensation T11 T11 anterior anterior lumen lumen thyroid artery thyroid artery Tl4 Tl4 ectoderm ectoderm epithelium epithelium cardiac muscle cardiac muscle lateral semicircular canal lateral semicircular canal ventricular layer ventricular layer facial vein facial vein left auricular region left auricular region nucleus polposus nucleus polposus Tl18 Tl18 dermomyotome dermomyotome cavity cavity hindlimb ridge hindlimb ridge right right pulmonary vein pulmonary vein fibula fibula nucleus polposus nucleus polposus annulus fibrosus annulus fibrosus metacarpus metacarpus S3 S3 oesophagus oesophagus splanchnopleure splanchnopleure incus incus lumen lumen apical ectodermal ridge apical ectodermal ridge dermomyotome dermomyotome dermomyotome dermomyotome sphincter of Oddi sphincter of Oddi sclerotome sclerotome roof plate roof plate mouth-foregut junction mouth-foregut junction caput caput marginal layer marginal layer roof plate roof plate mesenchyme mesenchyme rhombomere 04 rhombomere 04 ectoplacental cavity ectoplacental cavity mesenchyme mesenchyme carpus carpus floor plate floor plate mantle layer mantle layer associated mesenchyme associated mesenchyme somite 43 somite 43 epidermis epidermis islets of Langerhans islets of Langerhans trachealis trachealis lateral wall lateral wall mesentery mesentery rest of mesenchyme rest of mesenchyme associated mesenchyme associated mesenchyme skin skin epithelium epithelium cochlear component cochlear component glandular mucous membrane glandular mucous membrane skin skin somite 52 somite 52 rhombomere 07 rhombomere 07 skin skin branchial groove branchial groove associated mesenchyme associated mesenchyme patella PCC patella PCC cranial cranial rest of skin rest of skin smooth muscle smooth muscle Tl10 Tl10 dermis dermis epidermal component epidermal component cardiac jelly cardiac jelly dermis dermis Tl19 Tl19 roof plate roof plate roof plate roof plate basal cistern basal cistern femur cartilage condensation femur cartilage condensation trunk mesenchyme from neural crest trunk mesenchyme from neural crest lumen lumen T4 T4 nasal capsule nasal capsule common carotid artery common carotid artery mesoderm mesoderm sclerotome sclerotome meninges meninges rest of epithelium rest of epithelium urachus urachus T13 T13 hyoid bone hyoid bone lateral lateral stalk stalk C7 C7 hyoid bone pre-cartilage condensation hyoid bone pre-cartilage condensation associated mesenchyme associated mesenchyme mesentery mesentery mesenchyme mesenchyme cavities cavities associated mesenchyme associated mesenchyme primitive collecting duct primitive collecting duct trigeminal neural crest trigeminal neural crest epidermis epidermis marginal layer marginal layer ophthalmic artery ophthalmic artery external layer external layer bronchiole bronchiole sclerotome sclerotome somite somite intestitial tissue intestitial tissue muscle muscle basispenoid pre-cartilage condensation basispenoid pre-cartilage condensation tail tail infraspinatus infraspinatus epithelium epithelium parietal bone parietal bone posterior posterior Tl24 Tl24 left left vascular element vascular element rectum rectum extraembryonic component extraembryonic component phalanx phalanx axial skeleton axial skeleton epithelium epithelium pineal gland pineal gland knee joint primordium knee joint primordium dura mater dura mater anterior commissure anterior commissure tectum tectum palatal shelf palatal shelf pineal venous plexus pineal venous plexus olfactory cortex olfactory cortex vertebra vertebra medullary region medullary region epithelium epithelium skin skin associated mesenchyme associated mesenchyme mesenchyme mesenchyme facial VII facial VII epithelium epithelium larynx larynx marginal layer marginal layer cardiac muscle cardiac muscle epithelium epithelium internal internal mesothelium mesothelium ventral mesogastrium ventral mesogastrium ligamentum patellae ligamentum patellae lingual swelling lingual swelling hilar region hilar region pia mater pia mater median lobe median lobe sulcus limitans sulcus limitans myocoele myocoele vascular element vascular element skin skin pars intermedia pars intermedia lateral wall lateral wall floor plate floor plate dura mater dura mater lumen lumen Tl25 Tl25 mucous membranes mucous membranes lumen lumen associated mesenchyme associated mesenchyme parenchyma parenchyma Tl6 Tl6 rhombomere 08 rhombomere 08 ductus deferens ductus deferens minor minor induced blastemal cells induced blastemal cells ventricular layer ventricular layer Peyer's patches Peyer's patches lumen lumen T12 T12 spleen spleen associated mesenchyme associated mesenchyme posterior posterior somite 41 somite 41 cervical sinus cervical sinus associated mesenchyme associated mesenchyme T13 T13 branchial groove branchial groove dermis dermis mesentery mesentery ovigerous cords ovigerous cords myocoele myocoele forearm forearm pleural component pleural component metatarsus metatarsus myocoele myocoele dermomyotome dermomyotome annulus fibrosus annulus fibrosus Tl15 Tl15 umbilical artery umbilical artery upper upper associated mesenchyme associated mesenchyme vestibulo-cochlear VIII ganglion complex vestibulo-cochlear VIII ganglion complex vessels connecting internal carotid artery to primary head veins vessels connecting internal carotid artery to primary head veins C3 C3 serratus anterior serratus anterior choroid plexus choroid plexus associated mesenchyme associated mesenchyme second polar body second polar body upper part upper part superficial temporal vein superficial temporal vein abducent VI abducent VI head head left left myocoele myocoele vascular element vascular element annulus fibrosus annulus fibrosus somite 16 somite 16 right atrium right atrium primordial germ cells primordial germ cells Tl17 Tl17 ventricular layer ventricular layer mesenchyme mesenchyme arterial system arterial system ventricular layer ventricular layer mesenchyme mesenchyme alar columns alar columns vertebral pre-cartilage condensation vertebral pre-cartilage condensation olfactory olfactory iliac pre-cartilage condensation iliac pre-cartilage condensation epithelium epithelium metatarsus cartilage condensation metatarsus cartilage condensation nucleus polposus nucleus polposus greater palatine vein greater palatine vein mesothelium mesothelium C4 C4 endocardial tube endocardial tube epidermis epidermis muscle muscle ectoderm ectoderm palatoglossus palatoglossus acoustic ganglion VIII acoustic ganglion VIII head head T12 T12 myocoele myocoele metacarpus metacarpus leaflets leaflets Tl1 Tl1 lower recess lower recess mesenchyme derived from somatopleure mesenchyme derived from somatopleure lateral wall lateral wall otic pit otic pit Tl5 Tl5 ventricular layer ventricular layer fabella PCC fabella PCC hip joint hip joint lumen lumen cranium cranium somite 28 somite 28 ectoderm ectoderm choroid plexus choroid plexus associated mesenchyme associated mesenchyme maxillary process maxillary process dermomyotome dermomyotome marginal layer marginal layer Tl13 Tl13 roof plate roof plate 4th ventricle 4th ventricle external external epithelium epithelium nucleus polposus nucleus polposus degenerating mesonephros degenerating mesonephros induced blastemal cells induced blastemal cells somite 42 somite 42 transversus abdominis transversus abdominis cerebral aqueduct cerebral aqueduct sclerotome sclerotome somite 51 somite 51 mural trophectoderm mural trophectoderm oesophageal region oesophageal region carotid body carotid body sclerotome sclerotome left left Tl16 Tl16 floor plate floor plate thoracic thoracic visceral visceral S1 S1 parietal parietal proximal part proximal part skin skin maxillary-mandibular groove maxillary-mandibular groove vascular element vascular element lumen lumen mesentery mesentery Rathke's pouch Rathke's pouch epidermis epidermis myocoele myocoele vascular element vascular element metacarpus metacarpus rhombomere 06 rhombomere 06 epithelium epithelium future rhombencephalon future rhombencephalon phalanx cartilage condensation phalanx cartilage condensation tail tail ventricular layer ventricular layer epithalamic recess epithalamic recess subclavian vein subclavian vein maxillary component maxillary component sclerotome sclerotome clavicle clavicle dermal component dermal component left recurrent laryngeal branch left recurrent laryngeal branch endoderm endoderm mesenchyme mesenchyme labial swelling labial swelling dermomyotome dermomyotome dermomyotome dermomyotome vascular element vascular element associated mesenchyme associated mesenchyme cardiac muscle cardiac muscle floor plate floor plate floor plate floor plate phalanx pre-cartilage condensation phalanx pre-cartilage condensation accessory XI accessory XI glans penis glans penis neural plate neural plate metatarsus metatarsus endocardial lining endocardial lining cardiac muscle cardiac muscle metacarpus metacarpus subcardinal vein subcardinal vein optic recess optic recess associated mesenchyme associated mesenchyme exoccipital bone exoccipital bone circumvallate papilla circumvallate papilla subscapularis subscapularis common atrial chamber common atrial chamber somite 27 somite 27 mesothelium mesothelium epithelium epithelium vitelline vein vitelline vein myocoele myocoele neural retinal epithelium neural retinal epithelium right hepatic recess right hepatic recess Tl10 Tl10 sacral region sacral region marginal layer marginal layer transverse component transverse component dorsal mesentery dorsal mesentery rhombomere 05 rhombomere 05 sublingual caruncle sublingual caruncle ectoderm ectoderm floor plate floor plate ectoderm ectoderm ventricular layer ventricular layer superior vesical vein superior vesical vein dorsal mesentery dorsal mesentery ectoderm ectoderm lateral wall lateral wall ventricular layer ventricular layer dermomyotome dermomyotome lumen lumen embryonic component of the proamniotic cavity embryonic component of the proamniotic cavity pelvis pelvis L6 L6 rhombomere 08 rhombomere 08 postanal component postanal component posterior posterior pharynx pharynx associated mesenchyme associated mesenchyme associated mesenchyme associated mesenchyme epithelium epithelium epithelium epithelium C5 C5 epithelium epithelium vestibulocochlear VIII vestibulocochlear VIII pulmonary valve pulmonary valve neural crest neural crest inner nuclear layer inner nuclear layer myocoele myocoele Tl3 Tl3 dermomyotome dermomyotome bulbus cordis bulbus cordis physiological umbilical hernia physiological umbilical hernia dental lamina dental lamina basal plate basal plate ventricular layer ventricular layer rest of mesenchyme rest of mesenchyme rest of mesencyme rest of mesencyme associated mesenchyme associated mesenchyme palate palate bulbar part bulbar part right right tunica albuginea tunica albuginea future brain future brain gastro-splenic ligament gastro-splenic ligament synovial cavity of hip bone synovial cavity of hip bone endocardial lining endocardial lining visceral visceral associated mesenchyme associated mesenchyme dermomyotome dermomyotome myocoele myocoele T12 T12 lumen lumen alveolus alveolus hippocampus hippocampus myocoele myocoele associated mesenchyme associated mesenchyme hepatic vein hepatic vein ventral pancreatic duct ventral pancreatic duct nasal cavity nasal cavity laryngeal aditus laryngeal aditus teres major teres major talus talus sphenoidal fontanelle sphenoidal fontanelle ventricular layer ventricular layer urogenital sinus urogenital sinus epithelium epithelium parietal parietal urogenital membrane urogenital membrane somite 40 somite 40 amniotic cavity amniotic cavity marginal vein of hindlimb marginal vein of hindlimb mesenchyme mesenchyme mesoderm mesoderm inferior inferior inferior inferior mantle layer mantle layer mesenchyme mesenchyme future prosencephalon future prosencephalon epithelium epithelium mesenchyme derived from neural crest mesenchyme derived from neural crest fenestra cochleae fenestra cochleae urethral groove urethral groove endoderm endoderm interdigital region between digits 1 and 2 interdigital region between digits 1 and 2 scapula cartilage condensation scapula cartilage condensation epidermis epidermis metatarsus metatarsus vertebra vertebra maxillary division maxillary division frontal process frontal process associated mesenchyme associated mesenchyme S1 S1 hindgut diverticulum hindgut diverticulum conus medullaris conus medullaris pars nervosa pars nervosa C4 C4 neural luminal occlusion neural luminal occlusion somite 15 somite 15 myocoele myocoele ilio-psoas ilio-psoas endoderm endoderm knee joint knee joint somite 50 somite 50 epithelium epithelium dorsal pancreatic duct dorsal pancreatic duct knee knee quadriceps quadriceps myocoele myocoele trigeminal V trigeminal V epithelium epithelium pleuro-pericardial folds pleuro-pericardial folds dermomyotome dermomyotome inter-parietal bone primordium inter-parietal bone primordium cochlear component cochlear component unsegmented mesenchyme unsegmented mesenchyme gonad primordium gonad primordium claw claw vascular element vascular element vestibular component vestibular component lobar bronchus lobar bronchus Tl2 Tl2 T13 T13 extrinsic extrinsic epithelium epithelium prostate gland prostate gland ventricular layer ventricular layer anterior cardinal vein anterior cardinal vein mesoduodenum mesoduodenum primordial germ cells primordial germ cells middle middle rest of cerebral cortex rest of cerebral cortex prosencephalon prosencephalon 1st arch artery 1st arch artery vertebral artery vertebral artery anterior anterior common bile duct common bile duct upper recess upper recess superior superior annulus fibrosus annulus fibrosus mesenchyme derived from head mesoderm mesenchyme derived from head mesoderm rectus abdominis rectus abdominis parietal parietal associated mesenchyme associated mesenchyme Tl17 Tl17 lateral wall lateral wall floor plate floor plate left left nerve nerve arachnoid mater arachnoid mater inner cell mass inner cell mass hindbrain posterior to rhombomere 05 hindbrain posterior to rhombomere 05 associated mesenchyme associated mesenchyme Tl12 Tl12 lumen lumen neural crest neural crest endocardial lining endocardial lining intermediate grey horn intermediate grey horn sclerotome sclerotome lumen lumen Tl24 Tl24 annulus fibrosus annulus fibrosus submandibular gland submandibular gland somite 04 somite 04 metacarpus cartilage condensation metacarpus cartilage condensation mesenchyme mesenchyme extrahepatic part extrahepatic part T8 T8 loops of Henle loops of Henle primary palate primary palate C3 C3 sacro-iliac joint sacro-iliac joint facial artery facial artery future tarsus future tarsus ventricular layer ventricular layer lip lip L5 L5 coronal suture coronal suture supracardinal vein supracardinal vein myocoele myocoele incisive canal incisive canal appendix epididymis appendix epididymis vibrissa vibrissa non-hepatic component non-hepatic component branchial membrane branchial membrane dermis dermis mantle layer mantle layer