How does inhibition of the Na+/K+ ATPase increase the force of heart muscle contraction? O It decreases cytosolic K+ and therefore decreases Ca2+ export O It increases cytosolic Na+ and therefore decreases Ca2+ export It increases cytosolic K+ and therefore decreases Ca2+ export O It decreases cytosolic Na+ and therefore decreases Ca2+ export

Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter7: The Peripheral Nervous System: Efferent Division
Section: Chapter Questions
Problem 1SQE
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How does inhibition of the Na+/K+ ATPase
increase the force of heart muscle
contraction?
O It decreases cytosolic K+ and therefore
decreases Ca2+ export
It increases cytosolic Na+ and therefore
decreases Ca2+ export
It increases cytosolic K+ and therefore
decreases Ca2+ export
It decreases cytosolic Na+ and therefore
decreases Ca2+ export
Transcribed Image Text:How does inhibition of the Na+/K+ ATPase increase the force of heart muscle contraction? O It decreases cytosolic K+ and therefore decreases Ca2+ export It increases cytosolic Na+ and therefore decreases Ca2+ export It increases cytosolic K+ and therefore decreases Ca2+ export It decreases cytosolic Na+ and therefore decreases Ca2+ export
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