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Which of the following events occur during early ventricular systole?

waelhammad
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2022-10-18
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Which of the following events occur during early ventricular systole?

  1. the atria are relaxed, the ventricles are filling passively, the atrioventricular valves are open
  2. the ventricles are starting to contract, the atrioventricular valves are closed, the semilunar valves are closed
  3. the atria contract, the ventricles are relaxed, the atrioventricular valves are open
  4. the atria are relaxed, the ventricles are starting to relax, the atrioventricular valves are opening, the semilunar valves are closing.
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waelhammad
2022-10-18
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B: In early systole, the pressure in the ventricles may not have been raised sufficiently to push open the semilunar valves yet. Choice D describes late systole.

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