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Department of
Surgery

Anatomy of the Colon and Rectum

Overview
Colon Function
Rectum Function
     

The colon's primary function is to absorb water. When the stool enters the right side of the colon at the junction of the small bowel, the contents are quite liquid. As this material passes through the colon, most of the water is absorbed until it reaches the end of the left side where the stool becomes solid.

There is very little nutritional absorption involved with the colon.

Removing a third of the colon will have minimal impact on the quality of the stools, and should have no impact on continence.

 

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