Semilunar: Valve

: The sharp closure of these valves at the end of a heartbeat creates the second heart sound, commonly known as the "dub". What is the Pulmonary Valve? - Cleveland Clinic

: Unlike atrioventricular (AV) valves, semilunar valves do not have chordae tendineae (heart strings) or papillary muscles to hold them in place. semilunar valve

: Located between the left ventricle and the aorta . It controls the flow of oxygen-rich blood to the rest of the body. : The sharp closure of these valves at