Which of the following factors aids venous return to the heart?
A) sympathetic stimulation of capillaries
B) skeletal muscle pump squeezing blood through veins
C) respiratory pump providing a pressure gradient between the lower and chest veins
D) sympathetic stimulation of capillaries and skeletal muscle pump squeezing blood through veins
E) skeletal muscle pump squeezing blood through veins and respiratory pump providing a pressure gradient between the lower and chest veins
Correct Answer:
Verified
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