Dr Blanchard Is Giving a Lecture About the Propagation of the Action

question 53

Multiple Choice

 Dr. Blanchard is giving a lecture about the propagation of the action potential. What would she tell the class?

• A) That the process of an action potential repeats itself over and over down the length of the axon thanks to the diffusion of sodium ions.
• B) That the process of an action potential repeats itself over and over down the length of the axon thanks to the diffusion of potassium ions.
• C) The action potential moves down the length of the axon because all the sodium channels open all at once after the neuron reaches threshold.
• D) The action potential moves down the length of the axon because all the potassium channels open all at once after the neuron reaches threshold.

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