How can the heart be strong enough to pump blood up your legs against gravity?
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Answer:
Because of the valves, the blood can only move in one direction as it gets squeezed along. So it is a combination of blood pressure from the heart's pumping action, the valves, and muscle movement that gets the blood up the legs against gravity.
Answered by
1
Because of the valves, the blood can only move in one direction as it gets squeezed along. So it is a combinationof blood pressure from the heart's pumping action, the valves, and muscle movement that gets the blood up the legs against gravity.
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