The 'dubb' heart sound is produced at the tim | vedclass

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Question

(A) The heart produces two primary sounds during the cardiac cycle,often described as 'lubb' and 'dubb'.$1$. The first heart sound,'lubb',is associate

Vedclass · Accepted Answer

Semilunar valves

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(A) The heart produces two primary sounds during the cardiac cycle,often described as 'lubb' and 'dubb'.$1$. The first heart sound,'lubb',is associated with the closure of the atrioventricular valves (tricuspid and bicuspid valves) at the beginning of ventricular systole.$2$. The second heart sound,'dubb',is associated with the closure of the semilunar valves (aortic and pulmonary valves) at the beginning of ventricular diastole.Therefore,the 'dubb' sound is produced by the closure of the semilunar valves.

The 'dubb' heart sound is produced at the time of closure of:

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