See Also: Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
vitelline(dictionary)
vitelline sac(medicine)
Vitelline(medicine)
Vitelline pole(medicine)
vitelline artery(medicine)
vitelline reservoir(medicine)
vitelline membrane(medicine)
vitelline vessels(medicine)
vitelline duct(medicine)

vitelline sac (medicine)


vitelline sac -->
yolk sac
<embryology, ornithology> One of the set of extra embryonic membranes, growing out from the gut over the yolk surface, in birds formed from the splanchnopleure, an outer layer of splanchnic mesoderm and an inner layer of endoderm.