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In the resting phase of a neuron, when no signal is being transmitted, the axonal membrane shows higher permeability to potassium ions compared to sodium ions.

1. Higher permeability to potassium ions
2. No permeability to sodium ions
3. Both conditions apply
4. Neither condition applies

Correct answer: Higher permeability to potassium ions

Solution

In the resting state, the axonal membrane is more permeable to K+ ions due to the presence of more K+ leak channels, while it is nearly impermeable to Na+ ions.

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