Sodium potassium pump

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1

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What does it do?

moves Na and K against concentration gradient 3 Na move out, 2 K move in

2

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Why?

Maintains equilibrium (prevents cell explosion and deflation)

3

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Membrane potential

70 millivolts

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Energy requirements

20% of brain energy

3/4 for pump

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Pump works fast when…

body is doing things