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Explain how pressure differences in the heart ensure sufficient pumping of blood into the arteries. (3)

increased pressure in the ventricles the pressure in the ventricles is higher than the pressure in the atria causing the atrioventricular valves to closecausing the semilunar valves to open and the blood flows into the arteries -

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Explain how pressure differences in the heart ensure sufficient pumping of blood into the arteries. (3)

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