PATHOLOGY MCQ
HEART
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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prevent blood from leaking back into the ventricles
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prevent blood from leaking back into the atria
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allow blood to flow into the atria
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allow blood to leave the ventricles
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Detailed explanation-1: -The semilunar valves act to prevent backflow of blood from the arteries to the ventricles during ventricular diastole and help maintain pressure on the major arteries. The aortic semilunar valve separates the left ventricle from the opening of the aorta.
Detailed explanation-2: -Semilunar valves of humans The aortic valve permits the movement of the blood in one direction from the left ventricle into arteries. Therefore, when the left semilunar valve is closed, the blood cannot go back into the ventricle. The pulmonary vessel is found between the right ventricle and the pulmonary artery.
Detailed explanation-3: -Semilunar valves are present between the ventricles and major heart arteries. It allows the flow of blood from the right atrium to the right ventricle and the left atrium to the left ventricle. It allows the flow of blood from the left ventricle to the aorta and the right ventricle to the pulmonary artery.