…the stomach of birds is divided into the proventriculus and the glandular stomach. The proventriculus, also known as the glandular stomach, has numerous digestive glands on its inner wall that secrete digestive enzymes and acidic secretions. The gizzard is made up of a thick muscle layer on the outside and is covered on the inside with a tough keratinous membrane. *Some of the terminology explanations that mention "proventriculus" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…鳥類の胃は前胃と砂囊に分かれている。前胃proventriculusは腺胃ともいい,内壁に多数の消化腺があり,消化酵素および酸性分泌物を出す。砂囊は外側が厚い筋肉層より成り,内壁は角質のじょうぶな膜でおおわれている。… ※「proventriculus」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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