Which one of the following is a correctly mat | vedclass

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Question

(A) $Lubb$ is the first heart sound,which is low-pitched and produced due to the closure of the bicuspid and tricuspid $(AV)$ valves at the beginning

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Lubb - sharp closure of $AV$ valves at the beginning of ventricular systole

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(A) $Lubb$ is the first heart sound,which is low-pitched and produced due to the closure of the bicuspid and tricuspid $(AV)$ valves at the beginning of ventricular systole.$Dupp$ is the second heart sound,which is high-pitched and produced due to the closure of the semilunar valves at the beginning of ventricular diastole.Therefore,option $A$ is the only correctly matched pair.

Which one of the following is a correctly matching pair?

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