During the cardiac cycle,
A)blood flows into the ventricles even before the atria contract.
B)the AV valves open when ventricular pressure is greater than atrial pressure.
C)the semilunar valves open as the ventricles relax.
D)the semilunar valves open as the atria contract.
E)all of these occur.

Question

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The Answer of During the cardiac cycle,
A)blood flows into the ventricles even before the atria contract.
B)the AV valves open when ventricular pressure is greater than atrial pressure.
C)the semilunar valves open as the ventricles relax.
D)the semilunar valves open as the atria contract.
E)all of these occur.

During the Cardiac Cycle