Anal columns

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Anal columns
Gray1078.png
Coronal section of rectum and anal canal.
Gray1080.png
The interior of the anal cami and lower part of the rectum, showing the anal columns and the anal valves between their lower ends (the columns were more numerous in the specimen than usual)
Latin columnae anales
Gray's p.1185

Anal columns (Columns of Morgagni or less commonly Morgagni's columns) are a number of vertical folds, produced by an infolding of the mucous membrane and some of the muscular tissue in the upper half of the lumen of the anal canal. They are named after Giovanni Battista Morgagni who also has several other eponyms named after himself.

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This article incorporates text from a public domain edition of Gray's Anatomy.

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