| A | B |
|---|
| neuron | A nerve cell |
| medulla | Part of the brain that regulates heart rate |
| axon | Fiber that carries messages away from a nerve cell |
| synapse | Gap between the axon of one cell and the dendrite of another |
| nervous system | The system that is made of the brain, spinal cord, and brain |
| cerebellum | Part of the brain that controls balance and body motion |
| spinal cord | Group of many nerves that extend down the back |
| medulla | Lower part of the brainstem that controls heartbeat and breathing rate |
| brain | The organ that recieves interprets, and reacts to messages |
| cerebrum | Part of the brain that controls the senses and thinking |
| skull | Protects the brain |
| backbone | Potects the spinal cord |
| brainstem | Bundle of nerves at the base of the brain |
| concussion | A bruiselike injury of the brain that occurs when the cerebrum bumps against the inside of the skull |
| cerebrum | Part of the brain that allows you to memorize someone's telephone number |
| cerebellum | Part of the brain that allows you to walk to the store |
| medulla | Part of the brain that allows you to breathe faster when you run |
| cerebrum | The part of the brain that allows you to smell smoke |
| cerebellum | The part of the brain that will keep you standing if you start to lose your balance |
| dendrite | Fiber that carries messages to the nerve cell body |
