PATHOLOGY

Detailed explanation-1: -The semilunar valves permit blood to flow into the arteries from the ventricles and prevent the backward flow of blood from the arteries into the ventricles.

Detailed explanation-2: -Semilunar valves are present in veins. The main function of the valves in veins is to prevent back flow of blood. Blood in the arteries, after being pumped by the heart, are under much higher pressure than blood in veins so there is no need for valves in arteries to prevent back flow.

Detailed explanation-3: -The semilunar valves determine the passage of blood between the ventricles and the main arteries, transporting blood away from the heart to the vital organs.