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  • Heart Valves: Where They Are and What They Do

    There are four valves in the human heart. Find out how the heart valves function, their location, and more.

  • What Is Heart Valve Disease? NHLBI, NIH

    Jun 22, 2015· Heart valve disease occurs if one or more of your heart valves don't work well. The heart has four valves: the tricuspid, pulmonary, mitral, and aortic valves.

  • Heart Valve Disease: Get facts on Symptoms and

    Dec 01, 2006· When the hearts valves do not work as they should, the primary diagnosis is valvular heart disease. There are several situations where this can occur.

  • 4 Valves of the Heart Cleveland Clinic

    The four valves of the heart all keep blood moving correctly. Learn more from Cleveland Clinic about the types of valves and their function.

  • Heart valve Wikipedia

    A heart valve normally allows blood to flow in only one direction through the heart. The four valves commonly represented in a mammalian heart determine the pathway ...

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