Normal Mitral Valve
The mitral valve controls blood flow between the upper and lower chambers of the left side of the heart. The upper chamber is called the left atrium. The lower chamber is called the left ventricle.
With each heartbeat, the atria contract and push blood into the ventricles. The flaps of the mitral and tricuspid valves open to let blood through. Then, the ventricles contract to pump the blood out of the heart.
When the ventricles contract, the flaps of the mitral and tricuspid valves close. They form a tight seal that prevents blood from flowing back into the atria.
Source: NHLBI (NIH)1
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Mitral Valve: The valve between the left atrium and left ventricle of the heart.2
Read about these related anatomy topics:
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- Source: NHLBI (NIH): nhlbi.nih.gov/ health/ health-topics/ topics/ mvp
- Source: MeSH (U.S. National Library of Medicine)
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Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.