| A | B |
|---|
| central nervous system | a collection of organs that processes all incoming and outgoing messags from the nerves |
| peripheral nervous sytem | the collection of communication pathways, or nerves, whose primary funtion is to transfer information from all areas of the body and the outside environment to the central nervous system |
| neuron | a specialized cell that transfers messages throughout the body in the form of fast-moving electrical energy |
| impulse | all electrical message that passes along a neuron |
| receptor | a specialized cell, sometimes a dendrite that detects changes inside or outside the body |
| nerve | an axon bundled together with blood vessels and connective tissue |
| brain | the mass of nerve tissue that is the main organ of the nervous system |
| reflex | a quick, involuntary response to a stimulus |
| cerebrum | the part of the brain that detects touch, sight, sound, odor, taste, pain, heat, and cold and controls all voluntary acts |
| cerebellum | the part of the brain that keeps track of the body's position |
