Final answer:
The mitral valve is the one with 2 cusps, and the tricuspid and pulmonary valves have 3 cusps each.
Step-by-step explanation:
Two of the human heart valves have 3 cusps: the tricuspid valve and the pulmonary valve. The tricuspid valve, located at the opening between the right atrium and the right ventricle, allows blood to flow from the right atrium to the right ventricle. The pulmonary valve, one of the two semilunar valves, is found at the entrance to the pulmonary artery and also has three cusps.
The mitral valve, also known as the bicuspid valve or the left atrioventricular valve, is the valve that has 2 cusps. It is located at the opening between the left atrium and the left ventricle, and permits blood to flow from the left atrium to the left ventricle. The two cusps of the mitral valve are known as the anterior medial cusp and the posterior medial cusp, attached by chordae tendineae to papillary muscles from the wall of the ventricle.