During ventricular systole (More than one answer may be correct. Choose all that apply) A) atrioventricular valves are closed B) semilunar valves are open C) atrioventricular valves may be open D) semilunar valves may be closed
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This means that the pressure in the ventricles is increasing. A) Atrioventricular valves are closed: This is correct. The atrioventricular valves (tricuspid and mitral valves) are closed during ventricular systole to prevent blood from flowing back into the Show more…
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