Hvernig á að dæma "yolk sac"

• "yolk sac" fram á Enska.

Merkingar og skilgreiningar á "yolk sac"

Noun

membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional

Samheiti:

• yolk sac
• vitelline sac
• umbilical vesicle
• vesicula umbilicus

Noun

membranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes; circulates nutrients to the developing embryo

Samheiti:

• yolk sac