Nervous tissue 40X Motor Neuron smear. There are many different kinds of cells in the nervous system, but they can be organized into two major categories: neurons and supporting cells. Neurons (n) are the ones that generate and conduct nerve impulses.Supporting cells do not conduct nerve impulses, but they perform many other functions for the nerve tissue.The images on this page were made from a slide called a motor neuron smear.Motor neurons are large and easy to see, so they are usually used as examples.upporting cells do not conduct nerve impulses, but they perform many other functions for the nerve tissue. The images on this page were made from a slide called a motor neuron smear. Motor neurons are large and easy to see, so they are usually used as examples.