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Action potential

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In biology, the action potential is an electrical impulse that is formed in the body of a neuron and moves down the axon to the synapse.[1] The action potential is the result of the cell moving ions in and out of the cell.[2] Specifically, it involves Potassium (K+) and Sodium (Na+). The ions are moved in and out of the cell by potassium channels, sodium channels and the sodium-potassium pump.


  1. The Mind Project Glossary.
  2. Eastern Kentucky University: Neurons and the Nervous System.