Khan Academy says that there are chloride channels to allow Cl- to cross the plasma membrane but doesn't elaborate further. Can somebody explain this in more detail?
Well, the sodium-potassium pump keeps the outside of the cell + and the inside -. At the resting potential, anions would be inside the cell to maintain +/- aspect. During an action potential it is primarily the movement of sodium and potassium that changes the relative charges inside/outside the cell so i imagine they would stay put.
So yes, I am incorrect that extracellularly there are more Cl, however this is adjusted to maintain the resting potential. Also, the negatively charged anions that result mostly from proteins intracellularly help maintain the -70 mV resting potential as well.
This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies and terms of service.