Ventricular cardiomyocytes under sympathetic drive during a bout of exercise...   a. Would collectively make more force than at rest due to recruitment of more cardiomyocytes b. Would relax faster due to phosphorylation of the cardiac ryanodine receptors c. Would pump out more SV despite a decrease in EDV d. Would show an increased rate of myosin ATPase activity due to phosphorylation of the calcium ATPase pumps e. Would have elevated levels of cAMP and kinase activity

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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Ventricular cardiomyocytes under sympathetic drive during a bout of exercise...

 
a. Would collectively make more force than at rest due to recruitment of more cardiomyocytes
b. Would relax faster due to phosphorylation of the cardiac ryanodine receptors
c. Would pump out more SV despite a decrease in EDV
d. Would show an increased rate of myosin ATPase activity due to phosphorylation of the calcium ATPase pumps
e. Would have elevated levels of cAMP and kinase activity
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