Latin Sinus anales TA A05.7.05.006 | Dorlands
/Elsevier 12738546 FMA 76584 | |
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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.
References
Anal sinuses Wikipedia(Text) CC BY-SA