Engelsk substantiv: umbilical vesicle | |||
1. | umbilical vesicle (om dyr) membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional | ||
Ord med samme betydning (synonymer) | vesicula umbilicus, vitelline sac, yolk sac | ||
Mindre spesifikke uttrykk | sac | ||