Anal sphincter anatomy

The muscles in the anal sphincter are used in the process of defecation.

Review Date: 06/17/2010
Reviewed By: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc., and Scott Miller, MD, Urologist in private practice in Atlanta, Georgia.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)

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