The second heart sound occurs at the onset of which phase of cardiac cycle?
A、Isovolumetric contraction;
B、Rapid ejection;
C、Systole;
D、 Isovolumetric relaxation
发布时间:2025-07-07 05:18:34
A、Isovolumetric contraction;
B、Rapid ejection;
C、Systole;
D、 Isovolumetric relaxation