Question

How diameter of an axon affects the speed of an impulse?

Answer 1

Axon or nerve fibre is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. The function of the axon is to transmit information to different neurons, muscles, and glands. Axons are microscopic in diameter (typically about one micrometer (µm)). An axon with a large diameter will have a faster conduction velocity since the longitudinal resistance is lower than an axon with a smaller diameter.