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HeartSounds

Adaptive test — questions are selected based on your ability estimate. — Tag: LubbDupp

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What produces the first heart sound ("lubb")?

Contraction of the atrial myocardium Closure of the atrioventricular valves at the beginning of ventricular systole Opening of the semilunar valves during ventricular ejection Contraction of the ventricular myocardium

Evaluating…