With in the axoplasm, there are neurofilaments and microtubules which are involved in axona transport mechanism. The diameter of facial nerve axon varies between 3 and 20un and the nodes of spaced from 0.1 to 1.8mm apart. As the facial nerve fibers are myelinated, the salutatory conduction takes place in it which accounts for the rapid conduction velocity of the facial never, which is 70 to 110./sec. When injury to the neuron results in demyelination and faulty remyelination of the nerve fiber, the myelin covering is thinner and the distance between the nodes of ranvier are are altered, leading to marked slowing in the conduction velocity as well as to an increase in the threshold for
With in the axoplasm, there are neurofilaments and microtubules which are involved in axona transport mechanism. The diameter of facial nerve axon varies between 3 and 20un and the nodes of spaced from 0.1 to 1.8mm apart. As the facial nerve fibers are myelinated, the salutatory conduction takes place in it which accounts for the rapid conduction velocity of the facial never, which is 70 to 110./sec. When injury to the neuron results in demyelination and faulty remyelination of the nerve fiber, the myelin covering is thinner and the distance between the nodes of ranvier are are altered, leading to marked slowing in the conduction velocity as well as to an increase in the threshold for