卵黃囊

卵黄囊
luǎnhuángnáng
yolk sac (ectodermal cells attaching fetus to uterus before the development of the placenta)

CEDICT

  1. (anatomy) yolk sac
  2. yolk sac

Wiktionary

連結在胚胎上、由胚盤附近的下胚層細胞所組成的膜狀囊，為發育早期的胚胎提供所需的血液供應

維基詞典

Entry Composition

1 卵黃 luǎnhuáng egg yolk
2 囊 náng
  1. sack
  2. purse
  3. pocket (for money)