vitelline sac
英
美
- 卵黄囊
详细释义
Noun:
-
membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
双语例句
- The yolk sac is gradually vascularized.
卵黄囊逐渐被血管化了。 - The gonads form from a group of large granulated yolk sac cells which invacle the germinal ridges.
性腺是由一群大的颗粒的卵黄囊细胞入缀生殖峭而形成。
相关词汇
- yolk sac (=yolk bag)[...
- umbilical vesicle 脐囊
【近义词】
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