Which of the following does not increase venous return to the heart? a) Skeletal muscle pump squeezing blood through veins b) Sympathetic nerve activity causing venous vasoconstriction c) Respiratory pump providing a pressure gradient between the lower veins and the chest veins d) Parasympathetic activity causing venous vasodilation e) More than one answer applies
Added by Vickie S.
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Step 1: The skeletal muscle pump and respiratory pump both increase venous return to the heart by helping to push blood back towards the heart. Show more…
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