Pseudonodule - Pseudonodule

Japanese: 偽結節 - ぎけっせつ
Pseudonodule - Pseudonodule

…the umbilical cord is attached to the center, sides, or edges of the placenta, but rarely to the egg membrane. The umbilical cord is called a true knot when it is knotted, and a pseudoknot when it appears to be knotty due to the twisting of collagen or blood vessels. In reptiles and birds, the part of the embryo that connects to the yolk sac and other parts of the embryonic body is also called the umbilical cord.

*Some of the terminology that refers to "pseudonodule" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…臍帯は胎盤の中央・側方または辺縁に付着するが,まれには卵膜に付着する。また,臍帯が結ばれるのを真結節,膠質または血管の捻転により一見結節状に肥厚しているものを偽結節という。なお,爬虫類,鳥類でも,胚と卵黄囊やその他の胚体外部との接続部分を臍帯とよぶ。…

※「偽結節」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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