The Sodium - Potassium Pump

Zoology 120Department of ZoologyNorth Dakota State UniversityFargo, ND 58105-5517

The "Sodium Pump" actively extrudes three sodium ions from the cell and at the same time it brings two potassium ions into the cell. These ion movements are powered by the hydrolysis of ATP and the movement of the ions is against the existing ion gradients.

Defective during

some stress

Leads to

“third Spacing”

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