end-plate potential

(redirected from End Plate Potential)

end-plate potential

[¦end ‚plāt ′pə′ten·chəl]
(neuroscience)
Depolarization of the postsynaptic membrane at the neuromuscular junction, mediated by acetylcholine, in response to action potentials arriving at the endings of presynaptic motor neurons.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The small observed coefficient of variation (<3%) in end plate potentials indicates that there are only about 200 release sites (9), each of which secretes one quantum per action potential (2, 7, 8, 9).