“lub” sound is produced after _________ ? — Answer & Explanation | PrepBeePakistan

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HomeMCQsBiology

MEDIUMENGLISHBiology

“lub” sound is produced after _________ ?

Correct answer: C

Explanation

The 'lub' sound is caused by the closure of the atrioventricular valves (mitral/bicuspid and tricuspid) at the start of ventricular systole.

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