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'''A.''' A schematic view of an idealized action potential illustrates its various phases as the action potential passes a point on a cell membrane. '''B.''' Actual recordings of action potentials are often distorted compared to the schematic view because |
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There are 8 summaries on Action potential.
Encyclopedia and Summary Information
summary from source:
 Action Potential Summary
1,080 words, approx. 4 pages
 An action potential represents a change in electrical potential from the resting potential of the neuronal cell membrane, and is a series of electrical and underlying chemical changes that travel down the length of a neural cell (neuron). The neural... summary from source:
 Action Potential Summary
777 words, approx. 3 pages
A stereotyped change in electrical potential across the MEMBRANE of a neuron or muscle cell as a result of stimulation. The occurrence of an action potential is dependent on the cell being depolarized (see DEPOLARIZATION) past the point called the... summary from source:
 Nerve Impulse Summary
401 words, approx. 1 pages
A nerve impulse is a message which is transmitted along a nerve fiber or axon. It originates in the neuron's soma, or cell body, passes into the axon hillock, and then speeds down along the axon until it reaches the axon terminal or synaptic knobs. The... summary from source:
Action Potential Summary
355 words, approx. 1 pages
An action potential is how neurons—or nerve cells—communicate. Neurons consist of four basic parts: the body (soma), dendrites, axon, and synaptic endings. Surrounding the body of each neuron is a semipermeable membrane which separates... summary from source:
 Action Potential Summary
57 words, approx. 0 pages
Brief (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... summary from source:
summary from source:
summary from source:
 Action potential Summary
5,216 words, approx. 17 pages
An action potential is a "spike" of positive and negative ionic discharge that travels along the membrane of a cell. Action potentials are an essential feature of animal life, rapidly carrying information within and between tissues. They also occur in... 
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