The diagram below illustrates the active and passive transport mechanisms across a neuronal membrane at rest.
Which of the following statements regarding the maintenance of this resting membrane potential is not correct?
The continuous passive efflux of K+\text{K}^+K+ ions down their concentration gradient through non-gated leak channels is the primary contributor to establishing the negative electrical potential inside the axon.
The active transport mediated by the sodium-potassium pump is electrogenic, continuously exporting three Na+\text{Na}^+Na+ ions for every two K+\text{K}^+K+ ions imported, using energy from ATP hydrolysis.
The resting membrane has a much higher permeability to Na+\text{Na}^+Na+ ions than K+\text{K}^+K+ ions, which prevents the resting potential from drifting below −90 mV-90\text{ mV}−90 mV.
Both the chemical concentration gradient and the electrostatic gradient favor the influx of Na+\text{Na}^+Na+ ions into the axoplasm at rest.
