Which of the following causes the plateau phase during repolarization?
A) Outward flow of K⁺ ions is balanced by an inward flow of Ca²⁺ ions.
B) Influx of Na⁺ ions is much slower than Ca²⁺ ions.
C) K⁺ pumps are inactive after depolarization.
D) The amount of Na⁺ ions on both sides of the membrane are balanced at this point of the action potential.
Correct Answer:
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