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Resting potential

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resting potential
(Science: physiology) The electrical potential of the inside of a cell, relative to its surroundings. Almost all animal cells are negative inside, resting potentials are in the range 20 to 100mV, 70mV typical.

 


resting potential The difference in electrical charge across the plasma membrane of a neuron.

resting potential
The membrane potential characteristic of a nonconducting, excitable cell, with the inside of the cell more negative than the outside.
restriction enzyme ...

The Resting Potential
All cells (not just excitable cells) have a resting potential: an electrical charge across the plasma membrane, with the interior of the cell negative with respect to the exterior.

[edit] Resting potential
Main article: Resting potential
The resting potential is what would be maintained were there no action potentials, synaptic potentials, or other changes to the membrane potential.

resting potential The unequal distribution of charges on either side of a neuron membrane that is not undergoing an action potential.
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This charge difference is a resting potential and is measured in millivolts. Passage of ions across the cell membrane passes the electrical charge along the cell. The voltage potential is -65mV (millivolts) of a cell at rest (resting potential).

The potassium channels remain open until the membrane potential becomes at least as negative as the resting potential.

When a neuron is stimulated, the resting potential gives way to the action potential and the membrane is depolarized. The depolarization travels in one direction down the axon of the neuron to the opposite end of the cell.

Round pacinian corpuscle has a resting potential
Stretch-mediated sodium channels restrict movement of ions
PRESSURE OPENS SODIUM CHANNELS
Entry of sodium ions
Causes depolarisation / membrane potential / generator potential ...

state in an excitable cell whereby the inside of the cell is made less negative relative to the outside than at the resting membrane potential. A neuron membrane is depolarised if a stimulus decreases its voltage from the resting potential of -70mV ...

See also: Cell, Membrane, Cells, Action, Neuron

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