| A | B |
| Central Nervous System | made up of the brain and the spinal cord |
| Peripheral Nervous System | made up of nerves that carry messages to and from the central nervious system |
| Homeostasis | regulation and maintenance of a steady internal environment |
| Neuron | the basic unit of structure and function in the nervous system |
| Dendrites | the spidery branches extending from the cell body that carry message to the cell body |
| Axon | carries impulses away from the cell body |
| Synapse | the space between the axon and a dendrite |
| Cerebrum | located behind your forehead; sends signals to muscles and controls thought and reason |
| Brain | the control center of the nervious system that directs everything we do including thinking |
| Brainstem | forms the base of the brain |
| Cerebellum | located beneath the small bump on the back of your head; coordinates your muscle movement and regulates your posture and balance |
| Impluses | electrochemical messages |
| Spinal Cord | the major pathway of nerves |