…The flagellar chambers are formed by the collar cells arranged in a crescent shape and are scattered throughout the area. Water enters through the small holes and reaches each flagellar chamber through a complex set of branching channels, then exits through a common outflow channel into the gastric cavity. The cortex on the body surface is made of flat, polygonal pinacocytes, and inside is the mesogloea, which is the equivalent of meat. The mesogloea contains osteocytes that make bones, amebocytes that digest and absorb food, and protozoa that make sperm and eggs. … *Some of the terminology that mentions "pinacocyte" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…襟細胞が半月状に並んでつくった鞭毛室が散在し,小孔から入った水は複雑に分岐した水溝を通ってそれぞれの鞭毛室に達し,それから共同の流出溝を通って胃腔に出る。 体表面の皮層は扁平で多角形の扁平細胞pinacocyteでつくられ,その内側には中膠(ちゆうこう)mesogloeaという肉に相当する部分がある。中膠には骨をつくる生骨細胞,食物を消化吸収する変形細胞,精子や卵をつくる原生細胞などが含まれている。… ※「pinacocyte」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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