Proctodeum
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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.
Quick Facts Details, Precursor ...
Proctodeum | |
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Details | |
Precursor | Surface ectoderm |
Gives rise to | Lower anal canal |
Identifiers | |
Latin | proctodeum |
Anatomical terminology |
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