Heart valves

The valves of the heart open and close to control the flow of blood entering or leaving the heart.

Update Date: 3/15/2011

Updated by: A.D.A.M. Editorial Team: David Zieve, MD, MHA, and David R. Eltz. Previously reviewed by Shabir Bhimji, MD, PhD, Specializing in Cardiothoracic and Vascular Surgery, Midland, TX. Review provided by VeriMed Healthcare Network (6/13/2011).

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