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Nicole_5521
#1 Posted : Tuesday, June 15, 2021 4:58:43 PM
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Hello,

I’m wondering why in an action potential, the Na+ go into the cell and K+ go out of the cell, but in the resting potential and Na+/K+ pump, the Na+ go out and K+ go in? Why does the direction of Na+ flow switch?

Thanks!
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INSTR_Kennedy_135
#2 Posted : Wednesday, June 16, 2021 2:09:11 PM
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Hello Nicole,

In an action potential, it requires energy to drive Na and K against their natural electro-chemical gradient to change the resting membrane potential. At resting the molecules are flowing down their natural gradients.

Thanks,

Kennedy
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