NEET Biology question

The heart sound 'dup' is produced when

(A)Mitral valve is closed
(B)Semi-lunar valves at the base of aorta get closedCorrect
(C)Tricuspid valves is opened
(D)Mitral valve is opened

Answer: (B)

Solution

The second heart sound ("dup") is produced by the closure of the semilunar valves (aortic and pulmonary) at the end of ventricular systole, matching option (b);

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Question ID VK-116210