"action potential." YourDictionary, n.d. Web. 06 December 2018. <https://www.yourdictionary.com/action-potential>.
action potential. (n.d.). Retrieved December 06th, 2018, from https://www.yourdictionary.com/action-potential
A momentary change in electrical potential on the surface of a neuron or muscle cell. Nerve impulses are action potentials. They either stimulate a change in polarity in another neuron or cause a muscle cell to contract.