Question

whats the main job of the rectum

Answer 1

The key role of the rectal ampulla is to act as a temporary storehouse for feces. The expansion of the rectal walls causes the stretch receptors within the walls to stimulate the urge to defecate. If the defecation process is delayed, it may result in constipation.

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Answer 2

Its diameter can be compared to that of the sigmoid colon (the part of the large intestine nearest to rectum) at its onset. However it becomes larger near the anus, where it forms the rectal ampulla. The key role of the rectal ampulla is to act as as temporary storehouse of faeces.

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