Which of the Following Happens During Atrial Systole

question 95

Multiple Choice

Which of the following happens during atrial systole?

• A) The atria depolarize and contract together creating decreased volume and higher pressure in the atria than the ventricles.
• B) The atria then repolarize and relax.
• C) Blood rushes in from the vena cavae and pulmonary veins to fill the right and left atria.
• D) The increased pressure pushes blood through the AV valves into the atria.

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