| Term | Definition |
| cerebell/o | cerebellum |
| cerebr/o | cerebrum |
| encephal/o | brain |
| medull/o | medulla oblongata |
| myel/o | spinal cord |
| neur/o | nerve |
| Alzheimer disease | detroriation of mental capacity |
| cerebrovascular accident | stroke |
| concussion | brief loss of consciousness |
| epilepsy | recurrent seizure activity |
| glioblastoma | malignant brain tumor |
| hemiplegia | paralysis tha affects the right or left half of the body |
| meningitis | inflammation of meninges |
| multiple sclerosis | destruction of myelin sheath on nerve cells |
| paraplegia | paralysis from the waist down |
| syncope | fainting |