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Nervous System- Reverse Definations
| Term | Definition |
|---|---|
| nerve | a large bundle of axons wrapped in connective tissue |
| axon | a long, single projection that transmits impulses from the cell body |
| multiple sclerosis | a progressive, degenerative disease of the myelin sheath |
| epilepsy | a recurrent disorder of cerebral functions characterized by seizures |
| lethargy | abnormal inactivity or lack of response to normal stimuli |
| dysrthythmia | abnormal rhythm |
| coma | abnormally deep unconsciousness with absence of voluntary response to stimuli |
| microcephaly | abnormally small head |
| herpes zoster | acture inflammatory eruption of painful vessicles; also called shingles |
| convulsion | any sudden and violent contraction of one or more muscles |
| dendrites | branching cytoplasmic projections |
| syncope | brief loss of consciousness |
| dementia | broad term that refers to cognitive deficit |
| efferent | carry or move away from a central structure |
| afferent | carry on or move toward a central structure |
| neurotransmitters | chemical substances that facilitate the transmission of impulses across the synapses |
| Tay-Sach disease | characterized by progressive mental challenges |
| autonomic nervous system | conveys impulses to glands, smooth muscles and cardiac muscles |
| spinal cord | conveys sensory impulses to the brain and motor impulses away from the brain |
| hypnotics | depress central nervous system functions |
| bulimia nervosa | eating disorder characterized by binging and purging |
| hyperkinesia | excessive movement |
| ganglionectomy | excision of the ganglion |
| meningocele | form of spina bifida in which the spinal cord develops properly but the meninges protrude |
| occulta | form of spina bifida in which one or more vertebrae are malformed |
| agnosia | inability to comprehend auditory, visual, spatial, olfactory or other sensations |
| aphasia | inability to speak |
| craniotomy | incision into the skull |
| encephalitis | inflammation of the brain |
| concussion | injury to the brain, occasionally with transient loss of consciousness |
| pia mater | innermost membrane covering the brain and the spinal cord |
| tremor | involuntary tremble or shake |
| ataxia | lack of muscle coordination |
| cerebrum | largest and uppermost portion of the brain; sensory, emotions aspects of behaviour and memory |
| psychosis | major emotional disorder |
| arachnoid membrane | middle layer covering the brain |
| myelomeningocele | most severe form of spina bifida |
| lumbar puncture | needle puncture of the spinal cavity |
| neurosis | nonpsychotic mental illness |
| idiopathic | occurring without a known cause |
| dura mater | outermost membrane covering the brain and spinal cord |
| myelalgia | pain in the spinal cord |
| dystrophy | poor development |
| electroencephalography | recording of the electrical activity in the brain |
| cerebellum | second largest part of the brain; refines muscular movement |
| trephination | technique that cuts a circular opening into the skull |
| nerve conduction velocity | test that measures the speed at which impulses travel through a nerve |
| neuron | the functional cell of the nervous system |
| asthenia | weakness, debility or loss of strength |
| anesthesia | without feeling; loss of sensation |