Anal sinuses

The anal sinuses (rectal sinuses) are furrows in the anal canal, that separate the anal columns from one another. The anal sinuses end below in small valve-like folds, termed anal valves.

Anal sinuses
Coronal section of rectum and anal canal
The interior of the anal canal 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)
LatinSinus anales
Anatomical terminology


This article incorporates text in the public domain from page 1185 of the 20th edition of Gray's Anatomy (1918)

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