Sensory impulse: phenomenon of polarization and depolarization through which the abnormal acticity of a fibre spreads through a nerve.
Sensory neuron: nerve cord carrying sensory stimuli to the brain.
Dendrite: cytoplasmic extension of a nerve cell.
Cell body: part of the nerve cell between the axon and the dendrite.
Axon: extension of a neuron.
Motor neuron: nerve that produces muscular activity.
Motor end plate: muscular organ that becomes active in response to stimuli.
Myelin sheath: envelope of phosphorated fats.
Receptor (free nerve ending): receiver of nervous stimuli.