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Multiple Choice

What sound is made during ventricular systole?

Valve closures create the heart sounds, and the sound heard at the end of ventricular systole is produced by the closure of the semilunar valves, giving the “dupp” sound. This marks the transition from systole to diastole. The first sound, “lubb,” comes from the closing of the AV valves at the start of systole, while S3 and S4 are extra sounds associated with filling and atrial contraction rather than the normal systolic closure. So the end-of-systole sound, S2, is the one described as “dupp.”

Valve closures create the heart sounds, and the sound heard at the end of ventricular systole is produced by the closure of the semilunar valves, giving the “dupp” sound. This marks the transition from systole to diastole. The first sound, “lubb,” comes from the closing of the AV valves at the start of systole, while S3 and S4 are extra sounds associated with filling and atrial contraction rather than the normal systolic closure. So the end-of-systole sound, S2, is the one described as “dupp.”