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.

Question

Quizplus · Accepted Answer

The propagation of an action potential along the axon is primarily due to the diffusion of sodium ions (Na+) into the cell once the neuron reaches the threshold potential, causing depolarization. This process repeats down the length of the axon, allowing the action potential to travel.

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