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Ontology Browser
Term:
Parent Terms Term With Siblings Child Terms
blastodisc +    
embryonic structure +    
1st arch mandibular component +  
1st arch maxillary component +  
anal membrane 
animal cap +  
animal cap inner layer 
animal cap outer layer 
anterior neural tube +  
aortic sac +  
apical ectodermal ridge +  
archenteron +  
archenteron floor 
archenteron roof 
atrioventricular canal +  
axial mesoderm +  
bilaminar disc +  
blastocoel roof 
blastocyst +  
blastoderm +  
A layer of cells formed at one pole of macrolecithal eggs such as the yolky egg of birds. The yolk prevents the division from taking place through the egg, resulting in meroblastic cleavage during the many cleavage divisions. At the animal pole (containing less yolk than the vegetal pole), the zygote divides and subdivides, forming the blastoderm, which gradually spreads around the yolk and forms the embryo. The blastoderm is composed of two layers, the epiblast and the hypoblast, which enclose the fluid-filled blastocoel cavity.
blastodisc +  
blastodisc derived epiblast 
blastopore +  
blastopore lip +  
Brachet's cleft 
bulbo-ventricular groove 
bulbus cordis +  
carapacial ridge +  
cardiogenic plate +  
cardiopharyngeal field +  
caudal ganglionic eminence 
caudal part of nephrogenic cord +  
chordal neural plate +  
chordamesoderm +  
chorionic villous mesenchyme 
chorionic villus +  
common atrial chamber +  
common cardinal vein +  
conotruncus 
cytotrophoblast 
deep cell layer (gastrulation) 
definitive endoderm 
dorsal lateral ganglionic eminence 
dorsal meso-duodenum 
dorsal meso-oesophagus 
early proximal tubule 
ectodermal placode +  
ectoplacental cone +  
egg yolk 
embryoid body 
embryonic facial prominence +  
embryonic post-anal tail +  
embryonic tissue +  
embryonic urethral groove +  
endocardial cushion +  
epiblast (generic) +  
extravillous trophoblast 
facial bone primordium 
facio-acoustic VII-VIII preganglion complex +  
first pancreatic bud 
ganglionic eminence +  
germ layer / neural crest +  
germ ring +  
glomeral mesenchyme +  
glossopharyngeal IX preganglion 
glossopharyngeal-vagus IX-X preganglion complex +  
gonadal ridge +  
head fold of embryonic disc 
head somite +  
hemisphere of embryo +  
hypoblast (generic) +  
immature macula +  
infundibular recess of 3rd ventricle +  
inner cell mass +  
insect abdominal histoblast anlage +  
insect abdominal histoblast primordium 
insect Bolwig organ primordium +  
insect clypeo-labral primordium +  
insect dorsal epidermis primordium +  
insect embryonic imaginal precursor +  
insect lymph gland primordium +  
insect mesoderm anlage +  
insect neurogenic region 
insect presumptive embryonic/larval system +  
insect tracheal primordium +  
insect trunk ectoderm +  
insect ventral ectoderm +  
insect ventral epidermis primordium +  
insect visceral mesoderm +  
insect visual primordium +  
intermediate mesoderm +  
interrenal primordium +  
intersubcardinal venous anastomosis 
intraembryonic coelom +  
kidney rudiment +  
Koller's sickle 
Kupffer's vesicle 
lateral ganglionic eminence +  
lateral lingual swelling +  
lateral plate mesoderm +  
left horn of sinus venosus 
lingual swellings +  
marginal zone of embryo +  
maxillary prominence +  
medial ganglionic eminence 
median lingual swelling +  
mediastinum testis +  
mesocardium +  
metanephric cap 
Mullerian tubercle 
nephric ridge +  
nephrogenic cord +  
neural fold +  
neural fold hinge point 
neural groove +  
neural plate proneural cluster 
neural tube alar plate +  
notochordal plate +  
paired limb/fin field +  
pericardio-peritoneal canal +  
perioptic mesenchyme 
pharyngeal membrane +  
pharyngeal pouch +  
pleuropericardial canals 
pleuropericardial folds 
pleuroperitoneal membrane 
polster 
post-anal gut 
post-anal tail bud +  
posterior neural tube +  
prechordal mesoderm +  
prechordal plate +  
preputial swelling +  
presumptive cephalic mesoderm 
presumptive intervening zone +  
presumptive neuron neural tube 
presumptive structure +  
primary heart field +  
primitive groove 
primitive knot +  
primitive urogenital sinus +  
right horn of sinus venosus +  
rostral part of nephrogenic cord +  
secondary heart field +  
shelled egg +  
sinoatrial valve 
sinovaginal bulb +  
sinus of von Szily 
somatic layer of lateral plate mesoderm +  
somatopleure +  
splanchnic layer of lateral plate mesoderm +  
splanchnopleure +  
spleen primordium +  
syncytiotrophoblast +  
tail fold of embryonic disc 
tectal plate +  
tracheal diverticulum 
tracheoesophageal fold +  
trophoblast +  
truncus arteriosus +  
trunk and cervical myotome group +  
tunica vasculosa lentis 
undifferentiated genital tubercle +  
urogenital membrane 
vaginal plate 
vasa hyaloidea propria 
venous vitelline plexus 
ventral ectodermal ridge 
ventral mesentery +  
ventral midline 
yolk +  
yolk syncytial layer +  

Synonyms
Related Synonyms: germinal membrane ;   membrana germinativa
Xrefs: AAO:0000042 ;   BTO:0000126 ;   MESH:D001756 ;   TAO:0001176 ;   Wikipedia:Blastoderm ;   ZFA:0001176
Definition Sources: Wikipedia:Blastoderm

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