An anal sinus (rectal sinus) is a furrow formed between any two adjacent
anal columns of the
anal canal
The anal canal is the part that connects the rectum to the anus, located below the level of the pelvic diaphragm. It is located within the anal triangle of the perineum, between the right and left ischioanal fossa. As the final functional s ...
. An anal sinus is limited inferiorly by an
anal valve (which unites the inferior ends of a pair of adjacent anal columns). The
anal glands open into the anal sinuses.
References
External links
* — "The Female Pelvis: The Rectum"
* ()
Digestive system
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