yolk sac English

Meaning yolk sac meaning

What does yolk sac mean?

yolk sac

— noun membranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes; circulates nutrients to the developing embryo

— noun membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional

Synonyms yolk sac synonyms

What other words have the same or similar meaning as yolk sac?

yolk sac English » English

vitelline sac

umbilical vesicle

vesicula umbilicus

yolk-sac

vitellus capsule

vitellicle

foetus

fetus

amnion