Action potentials are changes in membrane potential that are localized to a small area of the plasma membrane.  However, an action potential can trigger the formation of a new action potential nearby.  This cycle can repeat to produce conduction of the action potential down the length of the axon.  Explain this process.

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Chapter4: Principles Of Neural And Hormonal Communication
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Problem 4TAHL: Assume presynaptic excitatory neuron A terminates on a postsynaptic cell near the axon hillock and...
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Action potentials are changes in membrane potential that are localized to a small area of the plasma membrane.  However, an action potential can trigger the formation of a new action potential nearby.  This cycle can repeat to produce conduction of the action potential down the length of the axon.  Explain this process.  

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