内ない胚はい葉よう

noun

endoderm

Technical term in developmental biology; the innermost of the three primary germ layers in an embryo, giving rise to the lining of the digestive and respiratory tracts.

• 内ない胚はい葉ようから消しょう化か管かんの上じょう皮ひが形けい成せいされる。

  The epithelium of the digestive tract is formed from the endoderm.