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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Prostomium ： ウィキペディア英語版 Prostomium The prostomium (sometimes also called the acron) is the first body segment in an annelid worm's body in the anterior end. It is in front of (but does not include) the mouth, being usually a small shelf- or lip-like extension over the dorsal side of the mouth. ==Function== It sometimes bears antennae and eyes. It often functions like a kind of overlip when the animal is feeding. The shape and composition of prostomium are important for annelid systematics. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Prostomium」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.