MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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bicuspid and mitral
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bicuspid and aortic
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aortic and pulmonic
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bicuspid and tricuspid
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Detailed explanation-1: -S2 is produced in part by hemodynamic events immediately following closure of the aortic and pulmonic valves . The vibrations of the second heart sound occur at the end of ventricular contraction and identify the onset of ventricular diastole and the end of mechanical systole.
Detailed explanation-2: -EXPLANATION: Second heart sound is produced by the closure of semilunar valves. Pulmonary valve and aortic valve are the examples of semilunar valve. They are present between the ventricles and their corresponding aorta and pulmonary veins. Semilunar valve helps to regulate the blood flow.
Detailed explanation-3: -Single S2. S2 is heard as a single sound when the aortic and pulmonic valves close simultaneously or nearly so. Because of a higher closing pressure, the aortic component is louder and closes slightly ahead of the pulmonic valve.