The mitral valve is one of four valves in the heart.
The mitral valve is located on the left side of the heart between the left atrium and left ventricle.
This valve, like many other valves, functions to allow movement of blood in one direction between the aforementioned chambers.
Structurally, the mitral valve is made up of 2 leaflets. Based of the leaflet’s anatomical location we call one the anterior mitral valve leaflet, and the other is called the posterior mitral valve leaflet.
Each leaflet structurally resembles a parachute. The leaflets are anchored to the heart by 2 ways. The first is the hinge point, which attaches the mitral valve annulus. The annulus is the frame that divides the left atrium from the left ventricle. This is similar to the hinge point of a door, allowing the valve to open and close. The second point of attachment is to the chordae tendineae and papillary muscles.
Each of these structures prevents the valve from flapping or billowing when opening and closing, and contributes to the stability of valve and cardiac function. The entire structure is known as the mitral valve apparatus.