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Explain the factors that enable blood in your leg veins to return to the heart in spite of the downward pull of gravity?
Wiki User
∙ 12y ago
In the circulatory system, veins, the vessels responsible for returning blood to the heart have valves that open to let blood flow through and shut to hold it against the downward pull of gravity.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoI believe it is through system circulation powered by the heart's very muscular contractions of the left ventricle.
Wiki User
∙ 12y agoi don't know the answer, that's why im asking you
Wiki User
∙ 12y agothe force of the heart muscles pushes the blood {it creates blood pressure}
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