Nicotine stimulates both the SA node to increase its firing rate and the myocardium to contract more forcefully, which raises cardiac output. It also causes arteriole vasoconstriction. Given this information, would you expect the blood pressure of a smoker to be relatively higher or lower than that of a nonsmoker? Explain.
Nicotine stimulates both the SA node to increase its firing rate and the myocardium to contract more forcefully, which raises cardiac output. It also causes arteriole vasoconstriction. Given this information, would you expect the blood pressure of a smoker to be relatively higher or lower than that of a nonsmoker? Explain.
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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Nicotine stimulates both the SA node to increase its firing rate and the myocardium to contract more forcefully, which raises cardiac output. It also causes arteriole vasoconstriction. Given this information, would you expect the blood pressure of a smoker to be relatively higher or lower than that of a nonsmoker? Explain.
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