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Which of these events do not occur during ventricular systole?(a) Closure of tricuspid and bicuspid valves(b) Atrial diastole(c) Opening of the semilunar valves(d) Flow of blood from atria to ventriclesThis question was addressed to me in final exam.This intriguing question originated from Human Circulatory System in section Body Fluids and Circulation of Biology – Class 11

Answer»

Right choice is (d) Flow of blood from ATRIA to VENTRICLES

To elaborate: During ventricular systole or the contraction of the ventricles, the tricuspid and bicuspid VALVES close and the semilunar valves open. The atrial diastole occurs at the same TIME as the ventricular systole.



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