EVERYDAY SCIENCE

Detailed explanation-1: -The semilunar valves are present at the edges of the arteries-the pulmonary artery and aorta. These valves guard the aorta and the pulmonary artery and help to prevent the backflow of blood supplied by them.

Detailed explanation-2: -The aortic valve protects the orifice between the left ventricle and the aorta.

Detailed explanation-3: -It opens when blood flows from your left ventricle to your aorta. Your heart valves ensure blood flows through your heart in one direction.

Detailed explanation-4: -cardiovascular system The semilunar valves are pocketlike structures attached at the point at which the pulmonary artery and the aorta leave the ventricles. The pulmonary valve guards the orifice between the right ventricle and the pulmonary artery.

Detailed explanation-5: -The semilunar valves include the pulmonary valve which is located between the right ventricle and the pulmonary artery, and the aortic valve, which is located between the left ventricle and the aorta artery.