Gastric cavity - Let's go

Japanese: 胃腔 - いこう

〘Noun〙① A cavity in the center of a sponge's body. Food taken in along with seawater through a small hole in the body wall is digested and absorbed by the collar cells that line the wall of this cavity, and water escapes to the outside world through the large hole at the top. Although it digests and absorbs food, it is not yet developed enough to be called a digestive organ. Also, a cavity that is connected to the mouth of a coelenterate . Coelenteron. ② The inner cavity of an animal's stomach.

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:

〘名〙① 海綿動物の体内中央にある空所。体壁の小さな穴から海水とともに取り入れられた食物は、ここの壁面にならぶ襟細胞(えりさいぼう)で消化吸収され、水は上部の大きな穴から外界に出る。食物を消化吸収はするが、まだ消化器官と呼べるほど発達したものではない。また、腔腸(こうちょう)動物の口から通じている空所。腔腸。② 動物の胃の内腔。

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