1. S1 sound: Answer closure of AV valves (tricuspid & mitral) lub corresponds with carotid pulse loudest at apex 2. S2 sound: Answer Closure of the semilunar valves (aortic & pulmonic) sounds like dup loudest at base 3. S1 split: Answer Tricuspid and mitral valves closing asynchronously 4. S2 split: Answer Aortic and pulmonic valves closing asynchronously 5. S3 sound: Answer ventricular resistance to filling during rapid filling phase volume overload "Kentucky" 6. S4 sound: Answer ventricular resistance to filling at end of diastole decreased compliance systolic overload "Tennessee" 7. S1, S2:

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