Trophoblast - Trophoblast

…(3) Implantation The late morula stage cells are divided into two layers, an inner one and an outer one. The outer one is called the trophoblast (also called the trophoblast), which forms the membrane of the fertilized egg and is responsible for its nutrition. The inner one is called the embryoblast (also called the embryonic embryo, embryonic pole, or embryonic node), which will later form the fetus (Figure 2). …

*Some of the terminology that mentions "trophoblast" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…(3)着床implantation　後期桑実胚期の細胞群は内外2層に分かれる。外側は栄養胚葉trophoblast(栄養膜ともいう)といい，受精卵の被膜をなすとともに，その栄養をつかさどる。内側の細胞群は胎芽胚葉embryoblast(胎芽胚，胎芽極あるいは胚結節ともいう)といい，のちに胎児を形成する(図2)。…

※「栄養胚葉」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報