Apr '16
29
MCAT Question of the Day | MCAT Course


  • Q:

    Which of the following is true as the membrane potential of a neuron crosses from negative to positive during depolarization in action potential?

     

    A

    Sodium reverses its direction and begins to flow out of the cell.

    B

    Sodium continues to flow into the cell until the voltage has reached a certain positive threshold.

    C

    Potassium begins to flow out of the cell.

    D

    The sodium-potassium pump ceases to function until the neuron has repolarized.




    Tags: Nervous System | Suggest a tag
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