During atrial systole, blood flow toward the ventricles increases by what percent?(a) 10%(b) 30%(c) 50%(d) 70%This question was posed to me by my school teacher while I was bunking the class.Origin of the question is Human Circulatory System topic in section Body Fluids and Circulation of Biology – Class 11

During atrial systole, blood flow toward the ventricles increases by w

1.	During atrial systole, blood flow toward the ventricles increases by what percent?(a) 10%(b) 30%(c) 50%(d) 70%This question was posed to me by my school teacher while I was bunking the class.Origin of the question is Human Circulatory System topic in section Body Fluids and Circulation of Biology – Class 11
Answer» RIGHT ANSWER is (b) 30% The best I can explain: During the atrial systole, both the atria contract SIMULTANEOUSLY while the VENTRICLES remain relaxed. The increase in pressure in the atria FORCES 30% more blood to flow into the ventricles.

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