There are two....: Heart sounds that every healthy heart makes, sound one (s1) and sound two (s2 (racepinephrine)). Systolic means it happens after s1. Diastolic means it happens after s2 (racepinephrine). Systolic sounds occur when the heart is pumping. Diastolic sounds happen when the heart is refilling for its next pump.
Answered 2/13/2013
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