What is the ratio [Na+]in/[Na+]out created by depolarization in a nerve cell if the final potential...
What is the ratio [Na+]in/[Na+]out created by depolarization in a nerve cell if the final potential is +50 mV at 37 0C?
Not sure how you go about solving this with what's given.
Homework Answers
Equilibrium potential
ENa= 61/1 log [Na+]out/[Na+]in
Given
ENa= +50 mV
50/61= log [Na+]out/[Na+]in
0.82= log [Na+]out/[Na+]in
Antilog 0.82= [Na+]out/[Na+]in
6.6= [Na+]out/[Na+]in
1/6.6=[Na+]in/[Na+]out
[Na+]in/[Na+]out=0.15:1
Add Answer to:
What is the ratio
[Na+]in/[Na+]out
created by depolarization in a nerve cell if the final potential...
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Correct answer is 51.1 mV
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Correct answer is 51.1 mV
4. Magnitude of the revereal potential oreated by nerve cell discharge. A nerve cell (resting potential 75 mv: inside negative) fires when some stimulus affects the nerve cell membrane and causes it to suddenly become highly permeable to Na ions. Depolarization occurs as Na ions rush inside the cell. At the height of this process, enough Na ions are inside the cell to actually make the interior positively charged relative to the exterior; that is,...
Nerve impulses are initiated at the input end of a nerve cell, travel along a relatively long axon (cable), and then cause an effect at the output end of the cell-for example, the initiation of a muscle contraction in a muscle cell. The nerve impulse is initiated by a stimulus that lowers the potential difference from outside the cell to inside from its normal – 70 mV to about -50 mV. A potential difference across two parts of the body...
Question 4 2 pts During and action potential, sodium (Na+) rushes into the cell causing of the cell. Then sodium channels close and potassium (K+) rushes out of the cell, causing of the cell. However, the potassium overshoots and causes Question 5 2 pts During the refractory period, the pumps Na+ ions out of the cell and K+ions into the cell, re-establishing the resting membrane potential and concentration gradient. Serotonin Acetylcholine Glutamate Endorphins Barbiturates GABA Dopamine Cocaine Sodium Potassium Calcium...
please help me
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