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Title: Proctodeum  
Author: World Heritage Encyclopedia
Language: English
Subject: Trophallaxis, Anal canal, Development of digestive system, Buccopharyngeal membrane, Hepatic diverticulum
Collection: Embryology of Digestive System
Publisher: World Heritage Encyclopedia


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.

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