Valves of the HeartOnline version Valves of the Heart by Educaplay Educational Resources 1 Coronary artery 2 Left ventricle 3 Mitral valve 4 Tricuspid valve 5 Right ventricle 6 Aorta 7 Opening of coronary artery 8 Aortic semilunar valve 9 Pulmonary semilunar valve