The Initial Influx of Sodium Ions When an Action Potential

question 135

Multiple Choice

The initial influx of sodium ions when an action potential begins causes which of the following to follow?

• A) a chain reaction in which more and more sodium channels open
• B) a chain reaction in which potassium channels open
• C) sodium channels rapidly close
• D) potassium channels rapidly close
• E) the cytoplasm becomes more negatively charged

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