The Opening of More and More Na⁺ Channels During Depolarization

question 169

Multiple Choice

The opening of more and more Na⁺ channels during depolarization

• A) is the result of the sodium-potassium exchange pump.
• B) is an example of a positive feedback cycle.
• C) is possible only if K⁺ channels remain closed.
• D) is the cause of the afterpotential.
• E) is an example of a negative feedback cycle.

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