The contraction of cardiac muscle cells results from the increase in calcium ion levels in the cytosol. For the cells to relax, an antiport removes calcium ion from the cytosol for every sodium ion that is taken in. Digitalis is a drug that is used to make the heart contract more strongly. This drug partially inhibits the Na+-K+ ATPase in the cardiac cells. Applying the concepts about membrane transport, answer the following: a. Propose an explanation for the drug’s effect. b. What will likely
The contraction of cardiac muscle cells results from the increase in calcium ion levels in the cytosol. For the cells to relax, an antiport removes calcium ion from the cytosol for every sodium ion that is taken in. Digitalis is a drug that is used to make the heart contract more strongly. This drug partially inhibits the Na+-K+ ATPase in the cardiac cells. Applying the concepts about membrane transport, answer the following: a. Propose an explanation for the drug’s effect. b. What will likely
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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The contraction of cardiac muscle cells results from the increase in calcium ion levels in the cytosol. For the cells to relax, an antiport removes calcium ion from the cytosol for every sodium ion that is taken in. Digitalis is a drug that is used to make the heart contract more strongly. This drug partially inhibits the Na+-K+ ATPase in the cardiac cells. Applying the concepts about membrane transport, answer the following:
a. Propose an explanation for the drug’s effect.
b. What will likely happen if too much of the drug is taken in? Why?
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