0
Why is there a resting membrane potential across the cell membrane?
Wiki User
∙ 9y ago
sodium/potassium pump
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What about a cell's resting membrane potential is FALSE?
The resting membrane potential is maintained by solely by passive transport processes.
What ion determines the resting membrane potential of nerve and muscle?
The concentrations on Na+ outside the cell and concentrations of K+ inside the cell determine the resting membrane potential.
What is the approximate resting potential of a neuron?
It is -70 millivolts. The resting potential of a neuron refers to the voltage difference across the plasma membrane of the cell, and is expressed as the voltage inside the membrane relative to the voltage outside the membrane. The typical resting potential voltage for a neuron is -70mV Resting potentials occur because of the difference in concentration of ions inside and outside of the cell, largely by K+ (Potassium ions) but some contribution is made by Na+(Sodium ions)
What restores and puts the cell membrane to resting conditions after an action potential?
Calcium
How is resting potential achieved?
The resting membrane potential difference between the inside and the outside of the cell is the result of selective permeability of the cell membrane and the active transport of ions into and out of the cell. Almost all cells have a potential difference, but some cells, neuron and heart muscle, also have voltage and chemically gated channels that allow for transient deviations from the 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
What is the difference in electrical charge across the cell membrane of a resting neuron is called?
This is the definition of "resting potential".
What about a cell's resting membrane potential is FALSE?
The resting membrane potential is maintained by solely by passive transport processes.
If a resting potential becomes more negative what happens to the cell?
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.
Electrical charge resulting from the difference between positive and negative ions outside and inside the brain cell membrane is called?
Membrane potential
In the absence of stimuli all cells in the body maintain a potential difference across the semipermeable membrane in which the inside of the cell is negatively charged in comparison to the outside?
resting membrane potential
What ion determines the resting membrane potential of nerve and muscle?
The concentrations on Na+ outside the cell and concentrations of K+ inside the cell determine the resting membrane potential.
What is the approximate resting potential of a neuron?
It is -70 millivolts. The resting potential of a neuron refers to the voltage difference across the plasma membrane of the cell, and is expressed as the voltage inside the membrane relative to the voltage outside the membrane. The typical resting potential voltage for a neuron is -70mV Resting potentials occur because of the difference in concentration of ions inside and outside of the cell, largely by K+ (Potassium ions) but some contribution is made by Na+(Sodium ions)
What restores and puts the cell membrane to resting conditions after an action potential?
Calcium
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 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.
How is resting potential achieved?
The resting membrane potential difference between the inside and the outside of the cell is the result of selective permeability of the cell membrane and the active transport of ions into and out of the cell. Almost all cells have a potential difference, but some cells, neuron and heart muscle, also have voltage and chemically gated channels that allow for transient deviations from the resting potential.
