Bowel movement: The rectum functions as stool reservoir. As stool being collected in this area, the rectum will be distended to a point of causing you to have urge of bowel movement. Normally, the internal anal sphincter is contracted at rest (when not having bowel movement). When you have urge of bowel movement, the internal sphincter will relax (dilated in a way) for stool evacuation.
Answered 10/5/2013
4.8k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question