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
B
Explanation:
A) The second heart sound is not heard during isovolumetric contraction.
C) The second heart sound is not heard during ventricular ejection.
D) The second heart sound is not heard during ventricular filling.
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