Which of the following factors greatly improves venous return to the heart during strenuous exercise?

Question

Quizplus · Accepted Answer

Contraction and relaxation of skeletal muscle greatly improves venous return to the heart during strenuous exercise by squeezing the veins and pushing blood toward the heart. This is known as the skeletal muscle pump. The other choices, rapid emptying of the right side of the heart, forceful action of the valves in the veins, and peristalsis in the large veins, do not play as significant a role in improving venous return during exercise.

Which of the Following Factors Greatly Improves Venous Return to the Heart