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The most important cause of increased blood flow through a working skeletal muscle during exercise is: a. Vasoconstriction in the viscera. O b. Accumulation of local vasodilators c. Increased cardiac output. o d. Stimulation of sympathetic vasodilator nerves to the muscle arteries. O e. Release of epinephrine from the adrenal medulla During isovolumetric contraction O a. The semilunar valves are open O b. The tricuspid valve is closed O C. The mitral valve is closed d. All valves are closed O e. All valves are open

The most important cause of increased blood flow through a working skeletal muscle during exercise is: a. Vasoconstriction in the viscera. O b. Accumulation of local vasodilators c. Increased cardiac output. o d. Stimulation of sympathetic vasodilator nerves to the muscle arteries. O e. Release of epinephrine from the adrenal medulla During isovolumetric contraction O a. The semilunar valves are open O b. The tricuspid valve is closed O C. The mitral valve is closed d. All valves are closed O e. All valves are open

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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The most important cause of increased blood flow through a working skeletal muscle during exercise is: O a. Vasoconstriction in the viscera. O b. Accumulation of local vasodilators O c. Increased cardiac output. o d. Stimulation of sympathetic vasodilator nerves to the muscle arteries. O e. Release of epinephrine from the adrenal medulla During isovolumetric contraction O a. The semilunar valves are open O b. The tricuspid valve is closed O C. The mitral valve is closed O d. All valves are closed O e. All valves are open
Transcribed Image Text:The most important cause of increased blood flow through a working skeletal muscle during exercise is: O a. Vasoconstriction in the viscera. O b. Accumulation of local vasodilators O c. Increased cardiac output. o d. Stimulation of sympathetic vasodilator nerves to the muscle arteries. O e. Release of epinephrine from the adrenal medulla During isovolumetric contraction O a. The semilunar valves are open O b. The tricuspid valve is closed O C. The mitral valve is closed O d. All valves are closed O e. All valves are open
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