Both sodium and potassium ions flow across the plasma membrane of the neuron when it is at rest.

Name: Both sodium and potassium ions flow across the plasma membrane of the neuron when it is at rest.
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At rest, only potassium ions flow across the plasma membrane of the neuron, while sodium ions are largely prevented from entering due to the selective permeability of the membrane and the activity of the sodium-potassium pump.

Both Sodium and Potassium Ions Flow Across the Plasma Membrane