What occurs between S2 and S1?
What occurs between S2 and S1? Heart Sounds S1 is normally a single sound because mitral and tricuspid valve closure occurs almost simultaneously. Clinically, S1 corresponds to the pulse. The second heart sound (S2) represents closure of the semilunar (aortic and pulmonary) valves (point d). What does S1 S2 S3 and S4 heart sounds represent? […]