eng: yolk sac

Information
has URI	http://lexvo.org/id/term/eng/yolk%20sac

Meaning
means	(noun) membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional vesicula umbilicus, umbilical vesicle, vitelline sac, yolk sac
means	(noun) membranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes; circulates nutrients to the developing embryo yolk sac