<P> In physiology , an action potential occurs when the membrane potential of a specific axon location rapidly rises and falls : this depolarisation then causes adjacent locations to similarly depolarise . Action potentials occur in several types of animal cells , called excitable cells , which include neurons , muscle cells , endocrine cells , and in some plant cells . </P>
<P> In physiology , an action potential occurs when the membrane potential of a specific axon location rapidly rises and falls : this depolarisation then causes adjacent locations to similarly depolarise . Action potentials occur in several types of animal cells , called excitable cells , which include neurons , muscle cells , endocrine cells , and in some plant cells . </P>
when is an action potential produced in a muscle fiber
when is an action potential produced in a muscle fiber
when the membrane potential of a specific axon location rapidly rises and falls
when the membrane potential of a specific axon location rapidly rises and falls