There are four valves in the heart. The mitral valve is one of the main valves on the left side of the heart between the left atrium and left ventricle.

It has two cusps (leaflets) that open to allow blood flow from your left atrium to your left ventricle.

The leaflets close preventing blood from flowing backward into the left atrium and into your lungs.

Learn more by downloading our Heart Valve Patient Guide.