| Central Nerve System | The brain and spinal cord. |
| Cerebellum | The "hind" brain. |
| Cerebral Hemispheres | The "higher" brain which is the most evolved area of the brain. |
| Cervical | The vertebrae of the neck, usually seven bones. |
| Chiropractic | The discipline of detecting and reducing vertebral subluxation. |
| Chiropractic Subluxation Complex | An extension of joint dysfunction. At this point, symptoms arise which are no longer simply musculo-skeletal. Now, through faulty transmission of information through the nervous system, various organs may malfunction. |
| Chiropractor | A doctor who has received a Doctor of Chiropractic degree; a doctor of chiropractic or D.C. |
| Chronic | Persisting for a long period of time. |
| Coccyx | A series of small bones at the end of the sacrum, commonly called the tailbone. |
| Compressive Lesion | A malfunctioning spinal bone or bones that results in direct pressure on a spinal nerve resulting in decreased nerve transmission. |
| Congenital | Existing at, or dating from birth. |