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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 |