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(A) Background Na+ current. (B) NKA current. (C) Na+ current along the process. (D) EAAT Na+ current During neural activity, the NKA pumps Na+ from the cell to allow for K+ uptake, therefore there is a net decrease in [Na+]PsC. When the neurone stops firing, NKA slows down and there is a net uptake of Na+ via the remaining channels.
