Question

Which of the following statements are TRUE about semilunar valves?

a. Are responsible for creating the "lub" sound when closing
b. Are responsible for creating the "dub" sound when closing
c. Open during ventricular contraction
d. Prevent blood back flow into the ventricles
e. Allow blood flow between the atria and the ventricles

Answer 1

Semilunar valves are responsible for creating the "dub" sound, prevent backflow, and allow blood flow to the pulmonary trunk and aorta.

Step-by-step explanation:

Semilunar valves are responsible for creating the "dub" sound when closing. They prevent blood backflow into the ventricles and allow blood flow from the ventricles to the pulmonary trunk and aorta.