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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 Needham's sac ： ウィキペディア英語版 Needham's sac Needham's sac (also called a spermatophore sac) is the part of the reproductive tract of cephalopods in which spermatophores are stored. Spermatophores are complex structures consisting of ropes of sperm and in some species include an ejaculatory apparatus and a cement body. Needham's sac opens into the left side of the mantle cavity. During copulation of some cephalopod species, the hectocotylus transfers the spermatophore from Needham's sac into the mantle cavity of the female. The cement body helps the spermatophore adhere to the female. == References == 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「Needham's sac」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.