ANATOMY

Detailed explanation-1: -Both the valves allow easy flow of blood from the ventricles to both the arteries and prevent backflow at the same time. The semilunar valves are called so because they are shaped like a half-moon. Atrioventricular valves are present between the arteries and ventricles.

Detailed explanation-2: -Semilunar valves connect your heart ventricles (lower chambers) and arteries. Semilunar valves get their name from the crescent moon shape of the flaps that make up the valve.

Detailed explanation-3: -shaped like a half-moon; crescent.

Detailed explanation-4: -These are the blood vessels that carry deoxygenated blood from different tissues of the body toward the heart. Semilunar valves : These valves guard the opening to the pulmonary artery and the ventricles to prevent blood from returning to the atria when the ventricles contract.

Detailed explanation-5: -Semilunar valves are paired valves of the heart at the bases of the aorta and the pulmonary artery. They, together with atrioventricular valves form the heart valves in humans.