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rectum

(REK-tum)
The last several inches of the large intestine closest to the anus.
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Gastrointestinal (digestive) system anatomy; drawing shows the esophagus, liver, stomach, colon, small intestine, rectum, and anus.Enlarge this image in new window
Anatomy of the lower gastrointestinal (digestive) system showing the colon, rectum, and anus. Other organs that make up the digestive system are also shown.
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