In excitable cells, repolarization is closely associated with, one of the following events_______________?
Correct answer: D. K efflux
- A. Na effux
- B. Na influx
- C. K influx
- D. K efflux
Explanation
Repolarization is mainly caused by opening of voltage-gated potassium channels, allowing K⁺ to flow out of the cell. Sodium influx produces depolarization rather than repolarization.
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