During resting condition, the axonal membrane is

Options

A. More permeable to `K^+` than `Na^+`
B. More permeable to `Na^+` than `K^+ `
C. Impermeable to `Na^+` than `K^+`
D. Impermeable to `K^+` than `Cl^-`

Answer

**Step-by-Step Solution:**

1. **Understanding Resting Potential**: During the resting condition of a neuron, the axonal membrane is at its resting potential. This is the state where the neuron is not actively transmitting a signal.

2. **Ion Channel States**: At resting potential, the sodium (Na+) channels are closed, meaning that sodium ions cannot enter the neuron. Conversely, the potassium (K+) channels are partially open, allowing potassium ions to move across the membrane.

3. **Permeability Comparison**: Since the potassium channels are partially open and the sodium channels are closed, the axonal membrane is more permeable to potassium ions than to sodium ions. This means that potassium can cross the membrane more easily than sodium can.

4. **Conclusion**: Therefore, during resting conditions, the axonal membrane is more permeable to potassium than sodium.

5. **Final Answer**: The correct option is that the axonal membrane is more permeable to potassium than sodium.

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