Question

Name the first sharp sound of the cardiac cycle​

Answer 1

Answer:

The "lub" sound or known as Systole

Answer 2

Answer:

Normally, two distinct sounds are heard through the stethoscope: a low, slightly prolonged “lub” (first sound) occurring at the beginning of ventricular contraction, or systole, and produced by closure of the mitral and tricuspid valves, and a sharper, higher-pitched “dup” (second sound), caused by closure of aortic ...