Fetal appendage

Japanese: fetal appendage(英語表記)fetalappendage
Fetal appendage

...This is the feto-placental circulation, and because the placenta functions like the kidneys and liver, the fetus can continue to develop even if its own organs are immature. The amniotic fluid, fetal membranes, placenta, and umbilical cord are called fetal appendages (Figure).
[Fetus (embryo) at 7 weeks of pregnancy]
It weighs about 5g, has a distinct head, and the limbs, eyes, ears, and mouth are just barely discernible to the naked eye.

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…これが胎児・胎盤循環feto‐placental circulationであり,胎児は胎盤が腎臓や肝臓のような働きをしているので,自分の臓器が未熟でも発育していける。羊水,卵膜,胎盤,臍帯は胎児に付属しているものという意味で胎児付属物fetal appendageという(図)。
[妊娠7週の胎児(胎芽)]
 体重が約5gで,頭部が大きく区別され,四肢,眼,耳,口が肉眼でようやく判別できる程度のもの。…

※「fetal appendage」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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