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proctodeum
A proctodeum is the back ectodermal part of an alimentary canal. It is created during embryogenesis by a folding of the outer body wall. It will form the lower part of the anal canal, below the pectinate line, which will be lined by stratified squamous non-keratinized (zona hemorrhagica) and stratified squamous keratinized (zona cutanea) epithelium. The junction between them is Hilton's white line. ==External links==
* http://trc.ucdavis.edu/mjguinan/apc100/modules/Reproductive/bird/overview0/overview.html * http://www.embryology.ch/francais/sdigestive/gesicht08.html
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「proctodeum」の詳細全文を読む
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