The dub sound is produced by the closure of w | vedclass

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Question

(A) The heart sounds are produced by the closure of heart valves.$1$. The first heart sound,'$lub$',is produced by the closure of the atrioventricular

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Semilunar valves

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(A) The heart sounds are produced by the closure of heart valves.$1$. The first heart sound,'$lub$',is produced by the closure of the atrioventricular valves (tricuspid and bicuspid valves) at the beginning of ventricular systole.$2$. The second heart sound,'$dub$',is produced by the closure of the semilunar valves (aortic and pulmonary valves) at the beginning of ventricular diastole.Therefore,the '$dub$' sound is associated with the closure of the semilunar valves.

The $dub$ sound is produced by the closure of which valves?

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