The rectum is the final portion of the large intestine. It empties stool from the body through the anus. The rectum is anchored in position by ligaments. When these ligaments weaken, the rectum can move out of its normal position, downward, and pass through the anus. This is called rectal prolapse.
Update Date 7/30/2014
Updated by: Jon A. Daller, MD, PhD, Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, AR. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.