Proctodeum

Proctodeum
Details
Precursor	surface ectoderm
Gives rise to	lower anal canal
Latin	Proctodeum
*Anatomical terminology* [edit on Wikidata]

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

Development of the digestive system

Foregut	Stomodeum Buccopharyngeal membrane Rathke's pouch Tracheoesophageal septum Pancreatic bud Hepatic diverticulum

Midgut	Midgut

Hindgut	Urorectal septum Proctodeum Cloaca Cloacal membrane

This article is issued from Wikipedia - version of the Saturday, February 20, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.