Which of the following does not happen during atrial diastole?
A. Blood rushes in from the vena cavae and pulmonary veins to fill the right and left atria.
B. The atria then repolarize and relax.
C. The increased pressure pushes blood through the AV valves into the atria.
D. The atria depolarize and contract together creating decreased volume and higher pressure in the atria than the ventricles.
Answer: D
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