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3.03 Nervous System
Nervous System Medical Terminology and key terms
| Term | Definition |
|---|---|
| arach- | spider |
| cephal/o | head |
| cerebell/o | cerebellum |
| cerebr/o | cerebrum |
| crani/o | skull |
| encephalo | brain |
| endo- | within |
| -esthesia | sensation, feeling |
| -graph | instrument used to record an image |
| hemi- | half |
| hydro | water |
| mening | membrane covering the brain |
| myel/o | spinal cord |
| neur/o | nerve |
| -oid | like, resemble |
| pleg/o | paralysis |
| psych/o | mind |
| -us | structure |
| blood-brain barrier | inability of some substances to penetrate the brain tissue |
| cerebral ventricles | four cavities within the brain that are filled with cerebrospinal fluid |
| convolutions | elevated folds on the surface of the cerebrum that increase the surface area of the brain |
| CVA | cerebrovascular accident; stroke |
| Dementia | loss in at least two areas of complex behaviors |
| Fight or Flight response | body perceives danger and is prepared to run away or stand and fight; heart rate increases, mouth becomes dry, and pupils and bronchi dilate |
| Gyri | convolutions in the brain |
| Lumbar puncture | a needle is inserted between two vertebrae to remove a sample of cerebrospinal fluid |
| Neurotransmitter | a chemical messenger that carries, boosts, and balances signals between neurons (ex. Acetylcholine) |
| Paralysis | the loss of the ability to move (and sometimes to feel anything) in part or most of the body, typically result of illness, poison, or injury |
| Stimulus | something that can elicit or evoke a physiological response in a cell, a tissue, or an organism |