umbilical vesicle

(Pronunciation -تلفظ سنیۓ ) US:

Slow

Normal

Noun: umbilical vesicle

1. umbilical vesicle [ Synonyms: vesicula umbilicus, vitelline sac, yolk sac]
Membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional

Generic Words:

sac

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