In physiology, an action potential is a short-lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called excitable cells, which include neurons, muscle cells, and endocrine cells, as well as in some plant cells. In n...
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http://en.wikipedia.org/wiki/Action_potential
This occurs when a neuron is activated and temporarily reverses the electrical state of its interior membrane from negative to positive. This electrical charge travels along the axon to the neuron's terminal where it triggers or inhibits the release of a neurotransmitter and then disappears.
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http://www.bbc.co.uk/radio4/reith2003/glossary.shtml
An electrical charge that travels along the axon to the neuron's terminal, where it triggers the release of a neurotransmitter. This occurs when a neuron is activated and temporarily reverses the electrical state of its interior membrane from negative to positive.
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http://www.brainfacts.org/glossary
the brief (about one-thousandth of a second) reversal of electric polarization of the membrane of a nerve cell (neuron) or muscle cell. In the neuron ... [8 related articles]
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http://www.britannica.com/eb/a-z/a/14
The electrical signal which rapidly propagates along the membrane of the axon of nerve cells, as well as over the surface of some muscle and glandular cells. It is caused by a change in membrane electrical potential, the underlying cause of which is a change in flow of ions across the membrane due t...
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http://www.daviddarling.info/encyclopedia/A/action_potential.html
self-propagating depolarization wave, i.e. a wave of electric potential, which progresses along excitable tissue
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=891-02-24
[See firstly resting potential.] Having grasped the principles of the neural resting potential, the next question is what would happen should the metabolic pumps in the neural cell membrane stop working momentarily? The answer is that it would drastically disturb the equilibrium which produced that
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http://www.encyclo.co.uk/local/20408
The technical term for the ‘messages` that travel along nerve cells. They are waves of electrical activity (impulses) that travel very quickly along the length of the thread-like nerve cells. When they reach the end of the nerve cell they can be passed on to other nerve cells, or to other types of cells, such as those in muscle.
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<physiology> The sequential, electrochemical polarization and depolarisation that travels across the membrane of a nerve cell (neuron) in response to stimulation (touch, pain, cold, etc.) ... (09 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973
the electrical activity developed in an excitable cell when stimulated; it may be elicited by electrical, chemical, or mechanical stimulation, by temperature change, or in certain other situations. On an electrocardiogram, action potential is seen as the cardiac cycle of a single cell, produced by a rapid sequence of changes at...
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An electrical charge that travels along the axon to the neuron
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An electrical pulse that passes along the membranes of excitable cells, such as neurons, muscle cells, fertilized eggs and certain plant cells. The precise shape of action potentials varies, but action potentials always involve a large depolarization of the cell membrane, from its normal resting potential of -50 to -90mV. In a neuron, action potentials can reach +30mV, and last 1ms. In muscles, action potentials can be much slower, lasting up to …
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Type: Term Definitions: 1. the change in membrane potential occurring in nerve, muscle, or other excitable tissue when excitation occurs.
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http://www.medilexicon.com/medicaldictionary.php?t=71544
An all-or-none electrical event in an axon or muscle fiber in which the polarity of the membrane potential is rapidly reversed and reestablished.
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http://www.mhhe.com/biosci/abio/glossary.mhtml
[
n] - the local voltage change across the cell wall as a nerve impulse is transmitted
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http://www.webdictionary.co.uk/definition.php?query=action%20potential
noun the local voltage change across the cell wall as a nerve impulse is transmitted
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In biology, a change in the potential difference (voltage) across the membrane of a nerve cell when an impulse passes along it. A change in potential (from about -60 to +45 millivolts) accompanies the passage of sodium and potassium ions across the membrane
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https://www.encyclo.co.uk/local/21221
A reversal of the electrical potential in the plasma membrane of a neuron that occurs when a nerve cell is stimulated; caused by rapid changes in membrane permeability to sodium and potassium.
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https://www.encyclo.co.uk/local/21571
The nerve impulse activated in a neuron that travels down the axon and causes neurotransmitters to be released into a synapse.
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https://www.encyclo.co.uk/local/22842
the change in electrical potential that occurs between the inside and outside of a nerve or muscle fiber when it is stimulated, serving to transmit nerve signals. Cf. nerve impulse.
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https://www.infoplease.com/dictionary/action-potential
A short-lived change in electric charge inside a neuron.
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https://www.sparknotes.com/psychology/psych101/glossary/terms/
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