What forms a concentration gradient outside the axons?
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Solution
Axon: The long, conducting outgrowth of a neuron’s cell body that conducts the neuronal impulse as an action potential to the adjoining nerve or effector organ (muscle or gland) is termed an axon.
When a neuron is at resting potential like when it is not conducting any impulse the axonal membrane is comparatively more permeable to K+ ions.
At resting, potential nearly the axonal membrane is impermeable to Na+ ions.
As a result, the axoplasm inside the axon contains a high concentration of K+ ions.
Whereas, the fluid outside the axon has a high concentration of Na+ ions.
This forms a concentration gradient outside the axon.
