Zoology - Neural Control and Coordination Question with Solution | TestHub

During the resting state, the axoplasm inside the axon contains a high concentration of K⁺ and negatively charged proteins and a low concentration of Na⁺. In contrast, the fluid outside the axon contains a low concentration of K⁺, a high concentration of Na^+, and thus forms a concentration gradient. These ionic gradients across the resting membrane are maintained by the active transport of ions by the sodium-potassium pump which transports 3Na⁺ outwards for 2K⁺ into the cell.