Definition of action potential in English:

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action potential

noun

Physiology
The change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell.
Example sentences
  • An outstanding example of the success of this approach is the experimental analysis of the resting potential and the action potential (nerve impulse) by Hodgkin and colleagues in the late 1940s.
  • During transduction, potassium floods into the hair cell, depolarising the cell and triggering an action potential in the associated cochlear neurones.
  • The latter is known to be due to the fact that hypocalcemia prolongs the duration of phase two of the action potential of cardiac muscle.

For editors and proofreaders

Syllabification: ac·tion po·ten·tial

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