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+ Cell membrane
+ Bioelectrochemistry
+ Electrophysiology
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Khanu9125

How does the cell membrane recharge itself?

Albert Hsieh  Follow

I am not sure what you mean by "what happens after this process..." Dr. Barker's answer is correct. Another point to realize is that a single action potential causes very little change in the concentration of ions on either side of the membrane. That is a reason that the Na/K ATPase can restore the ion gradient, even when the pumping rate is slower than ion flux through voltage-gated ion channels.


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Deborah Denise Thomas  Follow

I'm not certain if I am answering your question correctly, but I believe the answer you are looking for involves neurons' sodium potassium pump.

There are proteins in the cell membrane that use ATP to move sodium out and potassium in. This active transport does use energy (ATP) to help 'recharge' the cell. Because the net charge of the sodium (Na+) moving out of the cell during this process is greater than the net charge of the potassium (k+) moving into the cell, the inside of the cell becomes more negative than the extra-cellular space. This potential difference is akin to a battery and allows for subsequent action potentials.


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Dev Das  Follow

Thanks Barker, you are right. but what happens after this process, which allow the membrane to remain charged and live


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Antonio Daniels  Follow

By facilitating the exchange of sodium and potassium ion across the membrane causes membrane potential maintains and thus recharge of membrane too.


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