he repolarization of cardiac muscle is due to _______.Question 16Select one:A.sodium entering the cellB.potassium entering the cellC.potassium exiting the cellD.sodium exiting the cell
Question
he repolarization of cardiac muscle is due to _______.Question 16Select one:A.sodium entering the cellB.potassium entering the cellC.potassium exiting the cellD.sodium exiting the cell
Solution
The repolarization of cardiac muscle is due to "C. potassium exiting the cell".
Here's a step-by-step explanation:
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During an action potential, sodium ions (Na+) first rush into a cell, causing depolarization.
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After the peak of the action potential, potassium channels open and potassium ions (K+) rush out of the cell. This is called repolarization because it restores the negative charge inside the cell.
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Therefore, the repolarization of cardiac muscle is due to potassium exiting the cell.
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