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Parasympathetic stimulation of the AV node results in OA a decrease in SA pacemaker cell activity, reducing heart rate. B.an increase in conduction of electrical signals through AV node, increasing heart rate. Oca decrease in conduction of electrical signals through AV node, reducing heart rate. D. an increase in SA pacemaker cell activity, increasing heart rate. OE None of the above.

Parasympathetic stimulation of the AV node results in OA a decrease in SA pacemaker cell activity, reducing heart rate. B.an increase in conduction of electrical signals through AV node, increasing heart rate. Oca decrease in conduction of electrical signals through AV node, reducing heart rate. D. an increase in SA pacemaker cell activity, increasing heart rate. OE None of the above.

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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Parasympathetic stimulation of the AV node results in OA.a decrease in SA pacemaker cell activity, reducing heart rate. OB, an increase in conduction of electrical signals through AV node, increasing heart rate. Oca decrease in conduction of electrical signals through AV node, reducing heart rate. OD, an increase in SA pacemaker cell activity, increasing heart rate. OE None of the above. QUESTION 39 Cardiac muscle cells exhibit a plateau phase instead of quickly repolarizing. This is due to OA. outward pumping of sodium by the Na+/K+ pump OB. inward diffusion of potassium through voltage-gated K+ channels Ocinward diffusion of calcium through slow Ca2+ channels inward diffusion of sodium through fast Na+ channels OD QUESTION 40 Which of the following would be most likely to be determined with a patient's ECG recording? OA, Blockage of conduction of electrical signals between the atria and the ventricles. OBA heart murmur. OC. Cardiac output. D. Stroke volume. étv
Transcribed Image Text:Parasympathetic stimulation of the AV node results in OA.a decrease in SA pacemaker cell activity, reducing heart rate. OB, an increase in conduction of electrical signals through AV node, increasing heart rate. Oca decrease in conduction of electrical signals through AV node, reducing heart rate. OD, an increase in SA pacemaker cell activity, increasing heart rate. OE None of the above. QUESTION 39 Cardiac muscle cells exhibit a plateau phase instead of quickly repolarizing. This is due to OA. outward pumping of sodium by the Na+/K+ pump OB. inward diffusion of potassium through voltage-gated K+ channels Ocinward diffusion of calcium through slow Ca2+ channels inward diffusion of sodium through fast Na+ channels OD QUESTION 40 Which of the following would be most likely to be determined with a patient's ECG recording? OA, Blockage of conduction of electrical signals between the atria and the ventricles. OBA heart murmur. OC. Cardiac output. D. Stroke volume. étv
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