rectal ampulla
anatomy
Quick Summary
The rectal ampulla is the dilated terminal portion of the rectum, located just before the anus. It serves as a reservoir for feces before defecation. This segment is in contact with the posterior surface of the prostate gland in males and the posterior vaginal wall in females. The rectal ampulla contains folds called rectal valves that help support its contents. The urge to defecate is triggered when the rectal walls distend due to the accumulation of feces, stimulating the nervous system.12
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