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Creates Lub  Sound Heard Stethoscopes Ventricles Contracting Av

The "lub" sound is caused by the contraction of the ventricles and the snapping shut of the AV valves.

Il suono "lub" è causato dalla contrazione dei ventricoli e dalla chiusura delle valvole AV.

Front what creates the lub sound heard through stethoscopes?
Back ventricles contracting and AV valves snapping shut

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