An anal sinus (rectal sinus) is a furrow formed between any two adjacent anal columns of the anal canal. 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.[1]
References
External links
- Anatomy photo:43:11-0106 at the SUNY Downstate Medical Center — "The Female Pelvis: The Rectum"
- pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (rectum)
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