Transmission of nerve impulse through non-myelinated nerves:
(i) In resting stage, the Nat ions are pumped out from the axoplasm. It needs energy to work normally.
(ii) Thus axon membrane is electronegative inside and electropostive outside, this is called resting potential. In this state the nerve is said to be in polarized state.
(iii) When the nerve fibre is stimulated, it cause electrochemical disturbance in the nerve fibre, a change in potential. This change is called action potential.
(iv) Thus, Na+ migrate into the axoplasm and Cl− ions diffuses out. Thus negativity is increased outside and positivity is increased inside. This is called depolarisation.
(v) Depolarisation progresses along the nerve fibre in both directions from the point of stimulus.
