…The amnion is a thin, transparent, blood-free membrane that contacts the chorion at the fetal attachment stalk, and the amniotic cavity, or the space inside, is filled with amniotic fluid. The decidua, chorion, and amnion are collectively called the fetal membrane (Figure 4, Figure 5). The formation of the placenta begins 5 weeks after fertilization and is complete around 13 weeks. … *Some of the terminology that refers to "fetal membrane" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…羊膜は薄い透明な血管のない膜で,胎児付着茎のところで絨毛膜に接し,内部の空間である羊膜腔には羊水が充満する。脱落膜,絨毛膜,羊膜をあわせて卵膜fetal membraneという(図4,図5)。 胎盤の形成は受精後5週に始まり,13週ころ完成する。… ※「fetal membrane」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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