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NSCA Personal Trainer Exam Prep

Category - NSCA

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What controls the process of changing membrane potential in the nerve cell membrane by allowing sodium ions to rush into the cell?

Depolarization
Hyperpolarization
Sodium-potassium pump
Saltatory conduction

Explanation

Answer: C - The sodium-potassium pump controls the process of changing membrane potential in the nerve cell membrane by allowing sodium ions to rush into the cell. This causes a dramatic change in voltage, which in turn causes an action potential to be conducted along the length of the axon.

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