The valves found at the bases of the aorta and the pulmonary trunk are called
- A. bicuspid valves
- B. tricuspid valves
- C. semilunar valves
- D. atrioventricular valves
Explanation
Their three crescent shaped pockets fill with blood and snap shut when the ventricles relax, preventing backflow from the great arteries. The atrioventricular valves sit between atria and ventricles, a different position with different names.