The second heart sound is heard during which phase of the cardiac cycle?
A) isovolumetric contraction
B) at the beginning of ventricular diastole
C) ventricular ejection
D) ventricular filling

Question

Quizplus · Accepted Answer

The second heart sound (S2) is heard at the beginning of ventricular diastole, immediately after the closure of the semilunar valves (pulmonary and aortic). It marks the end of systole and the beginning of diastole.

The Second Heart Sound Is Heard During Which Phase of the Cardiac