…The outer layer is called the trophoblast (also called the trophoblast), which covers the fertilized egg and provides it with nutrition. The inner layer is called the embryoblast (also called the embryo, embryo pole, or embryonic node), which will later form the fetus (Figure 2). A fluid-filled blastocoel then forms between the two cell layers, and the embryoblast is pushed to one pole. … *Some of the terminology that mentions "embryoblast" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…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)。次いで両細胞層の間に液を満たした胞胚腔が生じ,胎芽胚葉は一方の極に圧排される。… ※「embryoblast」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 |
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