ANATOMY

Detailed explanation-1: -As the heart muscle contracts and relaxes, the valves open and close, letting blood flow into the ventricles and out to the body at alternate times.

Detailed explanation-2: -The atrioventricular valve closes when the pressure in the ventricle is greater than the pressure in the atrium. Basically, this means that the force of the ventricle beating slams the atrioventricular valve shut to prevent blood from being forced back into the atrium.

Detailed explanation-3: -Aortic valve stenosis causes a thickening and narrowing of the valve between the heart’s main pumping chamber (left ventricle) and the body’s main artery (aorta). The narrowing creates a smaller opening for blood to pass through. Blood flow from the heart to the rest of the body is reduced or blocked.

Detailed explanation-4: -If one or more of the valves fail to open or close properly, the blood flow through your heart to your body is disrupted. Heart valve disease may be present at birth (congenital). It can also occur in adults due to many causes and conditions, such as infections and other heart conditions.

Detailed explanation-5: -Each valve has flaps-called leaflets for the mitral and tricuspid valves and cusps for the aortic and pulmonary valves. These flaps should open and close once during each heartbeat.