Question: What happens at the? sodium-potassium exchange? pump? Need Assignment Help? (Module? 11.7B) The? sodium-potassium exchange pump maintains the resting membrane potential of the cell by ejecting 3 sodium ions for every 2 potassium ions entering the cell. The? sodium-potassium exchange pump maintains the resting membrane potential of the cell by ejecting 1 sodium ions for every 6 potassium ions entering the cell. The? sodium-potassium exchange pump maintains the resting membrane potential of the cell by ejecting 2 potassium ions for every 3 sodium ions entering the cell. The? sodium-potassium exchange pump maintains the resting membrane potential of the cell by ejecting 3 potassium ions for every 2 sodium ions entering the cell. The? sodium-potassium exchange pump maintains the resting membrane potential of the cell by ejecting 2 sodium ions for every 3 potassium ions entering the cell.