The heart valve between the left ventricle and the aorta It has three flaps, or cusps
The aortic valve is the last valve through which the blood passes before it enters the aorta or main blood vessel of the body The valve prevents blood from leaking back into the left ventricle from the aorta after it has been ejected from the heart
Four valves are in the heart with two on the left side and two on the right side On each side there is an inflow valve to the ventricle - the main pumping chamber - and an outflow valve The aortic valve is the outflow valve for the left ventricle, and as such opens when the ventricle squeezes blood out and then closes to keep blood from leaking back into the ventricle