Urdu Meanings, Pronounciation and Synonyms:
vitelline sac
(Pronunciation -تلفظ سنیۓ )
US: 
Slow
Normal
Noun: vitelline sac
| 1. vitelline sac [ Synonyms: umbilical vesicle, vesicula umbilicus, yolk sac] | |
|
Membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
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