During diastasis, which of the following occurs within the ventricles?

a. Pressure increases.
b. Blood enters slowly.
c. Pressure falls dramatically.
d. Blood pushes against the semilunar valves.


ANS: B
Rapid ventricular filling occurs when the atrioventricular valves open and lasts for approximately one third of the diastole. Two thirds of diastole consists of reduced filling, or diastasis.

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