yolk sac

yolk sac读音音标

英 [jəuk sæk]

美 [jok sæk]

yolk sac意思解释

n.

卵黄囊；

英英释义

n.

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

同义词：vitelline sacumbilical vesiclevesicula umbilicus

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

双语例句

用作名词(n.)The yolk sac is gradually vascularized.卵黄囊逐渐被血管化了。The dye Trypan Blue has a remarkable biphasic effect on pinocytosis by yolk sal.染料锥虫蓝对卵黄囊的胞饮作用具有明显的双向作用。