Proctodeum

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Proctodeum
Details
Precursor surface ectoderm
Gives rise to lower anal canal
Latin Proctodeum
Anatomical terminology

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[edit]

  • "Poumons". www.embryology.ch (in French).