umbilical vesicle   (TTS Sound)

The umbilical_vesicle has 1 Senses.

• vesicula umbilicus, umbilical vesicle, yolk sac, vitelline sac
• 卵黄嚢
• membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
• 心臓が機能するまでに哺乳動物の胎児の循環器官として機能する膜構造