NEETZoologyNeural Control and Coordination
Identify the state of the neuronal membrane and then choose not incorrect statement.
Options
- AThe membrane is in a depolarised state.
- BOutside positive is due to efflux of potassium ions.
- CThe electrical potential difference across the resting plasma membrane is called as the action potential.
- DIn resting state, ionic gradients are maintained by sodium- potassium pump.
Correct answer
D. In resting state, ionic gradients are maintained by sodium- potassium pump.
Step-by-step solution
Similarly, the membrane is impermeable to negatively charged proteins present in the axoplasm. Consequently, the axoplasm inside the axon contains high concentration of K+ and negatively charged proteins and low concentration of Na+. In contrast, the fluid outside the axon contains a low concentration of K+, a high concentration of Na+ and thus form 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