Question

Explain the differences in mechanism of action potential conduction between non-myelinated and myelinated axons

Answer 1

Mechanism of action potential Uchanisn of neon polentia welinated axon Non myelinated акон onen myelinated oxons have a myelinated anons have voltage .gated sodium voltage gated sodium el channels only in channels along entire the the nodal spaces. length of the membrane. ration o Action potential • Action potential propagation - Act propagation along myelinated along unmyelinated arons | axons requires activation requires activation of of voltage gated sodium vollage gated sodium channels only in the channels along the entire nodal spaces. length of the aron. • Action potential propagation Action potential propagation în a non-myelinated I in myelinated neurons is neurons is lower than | I fasted than in unmyelinated that myelinated neurons. - potential a myelinated axon unmyelinated action aron action . potential conduction conduction velocities ganges from about 0.5 to 10 m/s ranges up to 150m/s. Non myelinated axons To Myelinated axons are are not covered by I conered by myeline myeline sheath becaur sheath due to this due to this the conduction the conduction of nerve of nerve impulse is impulse is higher. slower. плем.