The Two Categories Of Heart Valves Are ______.. Like the aortic valve, it is also referred to as a semilunar valve, because of its shape. These valves are actual flaps that are located on each end of the two ventricles (lower chambers of the heart).
Blood passes through a valve before leaving each chamber of the heart. Two atria (upper chambers) and two ventricles (lower chambers). The four valves of the heart.