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If a resting potential becomes more negative what happens to the cell?
Wiki User
∙ 14y ago
When the membrane potential becomes more negative it is being hyperpolarized. Remember the resting membrane potential is already at a negative state (~70mV). So if you are making a comparison of a membrane potential that is hyperpolarized in comparison to a resting membrane potential, the resting membrane potential is said to be more depolarized.
When the membrane potential becomes more positive it is called depolarization.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoIf the resting potential becomes more negative the cell becomes hyperpolarized.
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Electrical charge resulting from the difference between positive and negative ions outside and inside the brain cell membrane is called?
Membrane potential
What is a nerve membrane at rest called?
When the neural membrane (neurolemma) is at rest it is said to have resting potential, polarized, and has a negative charge inside.
The diffusion of K out of the cell makes the inside of the cell less positive or more negative and acts to restore the original resting membrane potential This process is called?
repolarization
What name is given to a neuron that is not sending a nervous impulse?
resting potential
What is the electrical potential across the cell membrane of a nerve cell or muscle cell when the cell is not active?
resting potential
How is the resting potential different from repolarization?
Repolarization is when the cell or neuron returns to be more negative. Depolarization is when the cell or neuron becomes less and less negative.
A resting motor neuron is expected to?
exhibit a resting potential that is more negative than the "threshold" potential.
What is a resting motor neuron expected to do?
exhibit a resting potential that is more negative than the "threshold" potential
During an action potential hyperpolarization beyond more negative to the resting membrane potential is primarily due to?
Potential hyperpolarization are more negative to the resting membrane potential because of voltage. This is taught in biology.
When a neuron's resting potential is occurring the neuron is what charge on the inside?
resting potiental
If a resting neuron is stimulated and there is an inward flow of positive charges into the cell the membrane potential will?
If a resting neuron is stimulated and there is an inward flow of positive charges into the cell, the membrane potential will depolarize, meaning the inside of the cell becomes less negative. This can trigger an action potential if the depolarization reaches the threshold level.
Why the resting membrane potential of erythrocyte is more negative?
it isnt, it is less negative!
_____ is the process by which the neuron regains its negative resting membrane potential?
Repolarization
Electrical charge resulting from the difference between positive and negative ions outside and inside the brain cell membrane is called?
Membrane potential
What happens when a neuron becomes excitable?
A neuron which is excitable is in its RESTING STATE, which means that it is POLARIZED, and thus able to be stimulated into an action potential.
Why is the resting potential value of a membrane negative?
The resting membrane potential is the difference between the inside of the cell relative to the outside. The outside is always taken as 0mv. The resting membrane potential is negative because there is a higher concentration of potassium ions outside the cell (because the membrane is more permeable to potassium ions) than inside. Since potassium ions are positively charged this leads to a negative value.
Influx of Na plus till 70mV?
The electrical potential difference across a cell membrane (the resting potential) is around -65 mV, inside negative. In nerve cells (neurones) or muscle cells this potential difference is reversed during an action potential. Sodium (Na+) channels open and Na+ ions enter the cell down their concentration gradient. This entry of positive charge depolarises the membrane ie it cancels out the resting pootential and then reverses it, so the potential becomes positive inside and negative outside, giving a potential of about +50mV.
