Which statement about the normal cardiac cycle is right?
选项:
A:Atrium and ventricle contracts simultaneously;
B:Atrium-ventricular valves and aorta valves sometimes open simultaneously;
C:The atrial pressure is lower than ventricular pressure;
D:Atrium-ventricular valves and aorta valves sometimes close simultaneously
发布时间:2024-06-13 20:23:14