Anal sinuses

Anal sinuses
Coronal section of rectum and anal canal
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)
Details
Identifiers
Latin	Sinus anales
Dorlands /Elsevier	12738546
TA	A05.7.05.006
FMA	76584
Anatomical terminology []

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.

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