The second heart sound is heard during which phase of the cardiac cycle?
A. isovolumetric relaxation
B. isovolumetric contraction
C. ventricular ejection
D. ventricular filling
Answer:A
The second heart sound is heard during which phase of the cardiac cycle?
A. isovolumetric relaxation B. isovolumetric contraction C. ventricular ejection D. ventricular filling