Keywords:
amnion wall,
cardiac mesoderm region,
caudal end of embryonic disc,
cephalic end of embryonic disc,
connecting stalk,
cut edge of amnion,
cut edge of umbilical vesicle,
cut edge of umbilical vesicle wall,
embryonic endoderm,
endoderm,
epiblast,
gastrulation (primitive) groove,
left neural plate,
neural groove,
neurenteric canal,
notochordal (primitive) pit,
notochordal plate (in midline),
notochordal process deep to endoderm,
prechordal plate (deep to endoderm),
right neural plate,
transverse groove (artifact),
ventral groove (artifact?)
Source: The Virtual Human Embryo.