yolk sac#2 (n)
vitelline sac (n)
umbilical vesicle (n)
vesicula umbilicus (n)

n01465243

type n
lex_filenum 05
def membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
Outgoing links
Hypernym sac
Incoming links
Hyponym sac

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