In a resting neuron, the axonal membrane is more permeable for which of the following ions?

Solution:

In a resting neuron, the axonal membrane is in a polarized state. This resting potential is primarily maintained by the differential permeability of the membrane to various ions and the action of the Na⁺/K⁺ pump. The membrane is more permeable to K⁺ ions than to Na⁺ ions. This is due to the presence of more leakage channels for K⁺ ions compared to Na⁺ ions. As a result, K⁺ ions tend to move out of the neuron, contributing to the negative charge inside the cell. The Na⁺/K⁺ pump actively transports 3 Na⁺ ions out for every 2 K⁺ ions pumped in, further maintaining the resting potential and the concentration gradients.