| A | B |
|---|
| neuron | specialized cells |
| CNS | brain and spinal cord |
| PNS | nerves that connect CNS to body |
| brain | controls actions, emotions, memory |
| spinal cord | bundle of neurons |
| cerebrum | largest part of the brain |
| cerebellum | contols balance |
| brain stem | controls heartbeat and breathing |
| meninges | covers the brain and spinal cord |
| somatic system | deals with actions that you control |
| autonomic system | deals with actions you do not control |
| polio | disease caused by a virus |
| brain tumor | uncontrolled cell growth |
| head injury | caused by a blow to the head |
