What Keeps an Action Potential Continuing Down an Axon

question 388

Multiple Choice

What keeps an action potential continuing down an axon?

• A) At each successive segment of the axon, the action potential is regenerated by depolarization and the movement of ions across the axon's membrane.
• B) Neurotransmitters are constantly being released to generate the action potential at each successive segment of the axon.
• C) Action potentials are conducted down the axon, just as electricity is conducted through a wire.
• D) Ion channels open and close at the nodes of Ranvier, allowing neurotransmitters to enter into the axon and regenerate an action potential at each node.

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