Review for the nervous - Definitions
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a large bundle of axons wrapped in connective tissue | nerve
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A long,single projection that transmits impulses from the cell body | axon
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A progressive, degenerative disease of the myelin sheath | multiple sclerosis (MS)
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A recurrent disorder of cerebral functions characterized by seizures | epilepsy
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Abnormal inactivity or lack of response to normal stimuli | lethargy
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Abnormal rhythm | dysrhythmia
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Abnormally deep unconsciousness with absence of voluntary response to stimuli | coma
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Abnormally small head | microcephaly
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Acute inflammatory eruption of painful vesicles; also called shingles | Herpes zoster
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Any sudden and violent contraction of one or more muscles | convulsion
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Branching cytoplasmic projections | dendrites
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Brief loss of consciousness | syncope
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Broad term that refers to cognitive deficit | dementia
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Carry or move away from a central structure | efferent
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Carry of move toward a central structure | afferent
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Chemical substances that facilitate the transmission of impulses across synapses | neurotransmitters
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Characterized by progressive mental challenges | Tay-Sach Disease
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Conveys impulses to glands, smooth muscles and cardiac muscles | autonomic nervous system
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Conveys sensory impulses to the brain and motor impulses away from the brain | spinal cord
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Depress central nervous system functions | hypnotics
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Eating disorder characterized by binging and purging | bulimia nervosa
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Excessive movement | hyperkinesia
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Excision of a ganglion | ganglionectomy
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Form of spina bifida in which the spinal cord develops properly but the meninges protrude | meningocele
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Form of spina bifida in which one or more vertebrae are malformed | occulta
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inability to comprehend auditory, visual, spatial, olfactory or other sensations | agnosia
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inability to speak | aphasia
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incision into the skull | craniotomy
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inflammation of the brain | encephalitis
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injury to the brain, occasionally with transient loss of consciousness | concussion
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innermost membrane covering the brain and spinal cord | pia mater
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involuntary tremble or shake | tremor
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Lack of muscle coordination | ataxia
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Largest and uppermost portion of the brain; sensory, emotions aspects of behaviour and memory | cerebrum
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Major emotional disorder | psychosis
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Middle layer covering the brain | arachnoid membrane
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Most severe form of spina bifida | myelomeningocele
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Needle puncture of the spinal cavity | lumbar puncture (LP)
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Nonpsychotic mental illness | neurosis
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Occurring without a known cause | idiopathic
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Outermost membrane covering the brain and spinal cord | dura mater
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Pain in the spinal cord | myelalgia
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Poor development | dystrophy
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Recording of electrical activity in the brain | electroencephalogram (phy (EEG)
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Second largest part of the brain; refines muscular movement | cerebellum
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Technique that cuts a circular opening into the skull | trephination
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Test that measures the speed at which impulses travel through a nerve | Nerve Conduction Velocity (NCV)
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The functional cell of the nervous system | neuron
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Weakness, debility or loss of strength | asthenia
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Without feeling; loss of sensation as a result of disease, injury or anesthetic agent | anesthesia
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