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Home Q & A Board Biology-Related Homework Help Cell Biology
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staircase staircase
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7 years ago
If a neuron undershoots below -70mV after K+ channels close, then how would the Na/K pump raise the charge back to -70mV? If the pump works by pumping out 3 sodium ions and bringing in 2 potassium ions into the membrane, wouldn't that make the membrane potential more negative?
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Educator
7 years ago
Hi Staircase, thanks for the question.

Follow the image below:



The cell pumps out 3 sodium ions and 2 potassium ions.

This makes the inside of the cell less positive, more negative.

[Animation] - How the Sodium Potassium Pump Works

Animation - Sodium-Potassium Exchange Pump

Watch these animations too Upwards Arrow
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