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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 Zygosphene-zygantrum articulation ： ウィキペディア英語版 Zygosphene-zygantrum articulation The zygosphene-zygantrum articulation is an accessory joint between vertebrae found in several lepidosauromorph reptiles. This pivot joint consists of a forward-facing, wedge-shaped process called the zygosphene, that fits in a depression on the rearside of the next vertebrae, called the zygantrum.〔 The zygosphene sits between the prezygapophysis in the neural arch, whereas the zygantrum sits between the postzygapophysis.〔 This joint is found in snakes, lacertids, teiids, Gymnophthalmids as well as in some iguanids and cordylids.〔 It is also found in several fossil groups such as plesiosaurians, nothosaurians and pachypleurosaurians.〔 It is absent in today's Monitor lizard (''Varanus''), but occurs in fossil Varanids.〔 The zygosphen-zygantrum joint function to stabilize the vertebral column. While it permits horizontal and vertical movements of the vertebral column, it prevents rotations of the single vertebrae against each other.〔 ==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「Zygosphene-zygantrum articulation」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.