What is the mitral valve?

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  1. Dr. Mehmet Oz
     
    Dr. Mehmet Oz answered:
    The mitral valve is located on the left side of the heart. Blood flows from the lungs into the left atrium on the top of the heart, through the mitral valve into the left ventricle on the bottom.






    More Related Answers from Dr. Mehmet Oz
    The mitral valve is located on the left side of the heart. Blood flows from the lungs into the left atrium on the top of the heart, through the mitral valve into the left ventricle on the bottom. More
  2. Johns Hopkins Medicine
     

    The mitral valve is a one-way valve made up of two leaflets that conducts blood flow through the left side of the heart. When open, the mitral valve allows oxygenated blood from the lungs to fill the heart's main pumping chamber, the left ventricle. When the left ventricle squeezes to deliver blood throughout the body, the mitral valve normally closes to prevent blood from flowing back toward the lungs.

    More Related Answers from Johns Hopkins Medicine
    The mitral valve is a one-way valve made up of two leaflets that conducts blood flow through the left side of the heart. When open, the mitral valve allows oxygenated blood from the lungs to fill the heart's main pumping chamber, the left ventricle.... More
  3. Columbia University Department of Surgery
     
    The mitral valve is the inflow valve for the left ventricle. It closes when the ventricle squeezes blood out to the body and then opens to let more blood into the ventricle.
    The mitral valve is the inflow valve for the left ventricle. It closes when the ventricle squeezes blood out to the body and then opens to let more blood into the ventricle. More
  4. American Heart Association
     

    First, a quick anatomy lesson. Your heart has four valves. The mitral valve is between the heart's left atrium (upper, holding chamber) and left ventricle (lower, pumping chamber). The mitral valve has two flaps, or cusps. In mitral valve prolapse, one or both valve flaps are enlarged, and some of their supporting “strings” may be too long. When the heart pumps, the mitral valve flaps don't close smoothly or evenly. Instead, part of one or both flaps collapses backward into the left atrium. This sometimes lets a small amount of blood leak backward through the valve. This may cause a heart murmur.

    Most people with mitral valve prolapse don't have symptoms, won't have problems and won't need treatment. However, those who have leaky (regurgitant) prolapsing valves are at increased risk of developing an infection of the lining of the heart or heart valve known as endocarditis.

    More Related Answers from American Heart Association
    First, a quick anatomy lesson. Your heart has four valves. The mitral valve is between the heart's left atrium (upper, holding chamber) and left ventricle (lower, pumping chamber). The mitral valve has two flaps, or cusps. In mitral valve prolapse,... More
  5. Healthwise
     
    Healthwise answered:

    The mitral valve separates the left upper chamber (left atrium) and left lower chamber (left ventricle) of the heart. The mitral valve is formed from two downward-facing flaps.

    When the heart pumps, blood forces the flaps open, and blood flows from the left atrium to the left ventricle. Between heartbeats, the flaps close tightly so that blood does not leak backward through the valve.

    More Related Answers from Healthwise
    The mitral valve separates the left upper chamber (left atrium) and left lower chamber (left ventricle) of the heart. The mitral valve is formed from two downward-facing flaps. When the heart pumps, blood forces the flaps open, and blood flows... More