Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
vitelline sac | Yes | No | No | No |
yolk sac | Yes | No | No | No |
vitelline sac (noun) | yolk sac (noun) |
---|---|
membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional | membranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes; circulates nutrients to the developing embryo |
membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional |