Nervous Tissue

Nervous tissue is one of four major classes of vertebrate tissue.
Nervous tissue is the main component of the nervous system - the brain, spinal cord, and nerves-which regulates and controls body functions. It is composed of neurons, which transmit impulses, and the neuroglia cells, which assist propagation of the nerve impulse as well as provide nutrients to the neuron.
Nervous tissue is made of nerve cells that come in many varieties, all of which are distinctly characteristic by the axon or long stem like part of the cell that sends actio potential signals to the next cell.
Functions of the nervous system are sensory input, integration, controls of muscles and glands, homeostasis, and mental activity.