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Which of these events coincide with ventricular systole?

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in Biology – Class 11 by (272k points)
Which of these events coincide with ventricular systole?

(a) Atrial diastole

(b) Atrial systole

(c) Joint diastole

(d) Ventricular diastole

This question was addressed to me during an online interview.

I need to ask this question from Human Circulatory System topic in section Body Fluids and Circulation of Biology – Class 11

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Best answer
Correct answer is (a) Atrial diastole

Best explanation: The relaxation of the atria or the atrial diastole coincides with the contraction of the ventricles or the ventricular systole. The right and left semilunar valves open up due to the increase in pressure in the ventricles.

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