What type of ion channels are present on the neural membrane?

The electrical potential difference across the resting plasma membrane is called the resting potential.The outer surface of the axonal membrane possesses a positive charge while its inner surface becomes negatively charged and therefore is polarisedDifferent types of ion channels are present on the neural membrane, which are selectively permeable to different ions.

The sodium-potassium pump transports 3 Na⁺ ions outwards for 2 K⁺ ions into the cell. When a neuron is resting, the axonal membrane is comparatively more permeable to potassium ions and nearly impermeable to sodium ions. The axoplasm inside the axon contains high concentration of K⁺ and negatively charged proteins and low concentration of Na⁺.