Which Valve(s) Cusps Open Up Toward the Base of the Heart

Question

Which valve(s) cusps open up toward the base of the heart?
A) right and left AV valves
B) aortic and pulmonary valves
C) left AV and aortic valves
D) right AV and pulmonary valves
E) right AV, left AV, aortic and pulmonary valves

Accepted Answer

The aortic and pulmonary valves, also known as the semilunar valves, have cusps that open toward the base of the heart, allowing blood to flow out of the heart into the aorta and pulmonary artery, respectively.