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action potential |
Also found in: Dictionary/thesaurus, Medical, Legal, Acronyms, Wikipedia, Hutchinson | 0.01 sec. |
action potentialBrief (about one-thousandth of a second) reversal of electric polarization of the membrane of a nerve or muscle cell. Stimulation of the cell by certain chemicals or by sensory receptor cells causes depolarization of the membrane, permitting an impulse to move along the nerve fibre (in nerve cells) or causing the cell to contract (in muscle cells). action potential [′ak·shən pə‚ten·chəl] (neuroscience) A transient change in electric potential at the surface of a nerve or muscle cell occurring at the moment of excitation. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Average motor unit action potential (MUAP) frequencies for selected
facial muscles of expression (frontalis, orbicularis oculi, levator
labii, zygomaticus major, and orbicularis otis) ranged from 6. (8) Electrocochleography may
show an increased ratio of summating potential to action potential in
patients with perilymph fistulae but, overall, findings can be similar
to those in patients with Meniere's disease. As a result, I
intended to exploit the shock action potential of the Coyote Light
Armoured Vehicles to contain the Fort and conduct simultaneously a
sensitive site exploitation operation. |
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