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Select the incorrect statement w.r.t circulatory system in humans.

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SA node acts as a pacemaker for the cardiac cycle.

Blood pressure in the pulmonary artery is more than that in the pulmonary vein.

The hepatic portal vein carries blood to the liver from the intestine.

Ventricular systole increases blood flow into the ventricles from the atrium by about 30 per cent.

answer is D.

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Detailed Solution

30% of ventricular filling occurs during atrial systole, not in ventricular systole.

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