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Digital rectal examination, showing the rectum, bladder, and prostate.
Coronal section of rectum and anal canal.

The rectum is a part of the digestive system at the end of the colon. At the end of the rectum, just before the sphincter of the anus, is the rectal ampulla.

The corresponding adjective rectal is used practically synonymously to anal.

The rectum's anatomical purpose is to help in controlled defecation. It forms the feces and has the ability of feeling pressure that tells a person when they need to go to toilet, or pass wind.

The rectum also plays a role in the administration of enemas and suppositories, in anal examinations, anal sex, prostate massage and the use of anal sex toys.

See also[edit]