1. Ganglion—knot-like mass or group of nerve cell bodies located outside the CNS

2. Reflex—automatic, involuntary response to a change inside or outside the body

3. Dendrite—root-like structures that receive impulses and conduct them to the cell body

4. Neurotransmitter—chemical messenger that transmit messages between nerve cells

5. Meningocele—protrusion of membranes of brain and/or spinal cord through a defect in the skull or spinal column

6. Parkinson’s disease—chronic slowly progressive, degenerative CNS disorder

7. Amnesia—disturbance in memory marked by total/partial inability to recall past experiences

8. Coma—profound/deep state of unconsciousness marked by absence of spontaneous eye movements, no response to painful stimuli and no vocalization

9. Dementia—slowly progressive decline in mental abilities

10. Stroke—damage to brain that occurs when blood flow to the brain is disrupted by blockage or rupture.

11. Aphasia—loss of ability to speak, write, or comprehend written/spoken word

12. Poliomyelitis—viral infection of gray matter of spinal cord resulting in paralysis

13. Paresthesia—abnormal sensation such as burning, tingling, numbness

14. Epilepsy—group of neurologic disorders characterized by recurrent seizures

15. Narcolepsy—recurrent uncontrollable seizures of drowsiness and sleep