What is the inner surface of the axonal membrane of a resting...

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 polarised. The membrane of a neuron is polarised due to the presence of different types of ion channels and the ionic gradients maintained by the sodium-potassium pump. The fluid outside the axon in a resting state contains a low concentration of K⁺, a high concentration of Na⁺ and thus form a concentration gradient