1.

Which action is done with smooth muscles? A. smiling back at your crush B. mastication of food C. motion of the fingers D. blood circulation

Answer»

Blood CirculationBlood PRIMARILY moves in the veins by the rhythmic MOVEMENT of smooth muscle in the vessel wall and by the action of the skeletal muscle as the body moves. Because most veins MUST move blood against the pull of gravity, blood is PREVENTED from flowing backward in the veins by one-way valves.



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