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Nervous System test
Review
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. |
Dysrhythmia | abnormal rhythm. |
Coma | abnormally deep unconsciousness with absence of voluntary response to stimuli. |
Microcephaly | abnormally small head. |
Herpes Zoster | acute inflammatory eruption of painful vesicles; also called shingles. |
Convulsion | A 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 or move toward a central structure. |
Neurotransmitters | chemical substances that facilitate the transmission of impulses across 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 a 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 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. |
Myelagia | pain in the spinal cord. |
Dystrophy | poor development. |
Electroencephalogram | recording of electrical activity in the brain. |
Cerebellum | second largest part of the brain; refines muscular movement. |
Trephination | technique that cut 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 |
AD | Alzheimer Disease |
ADHD | attention deficit-hyperactivity disorder |
CNS | central nervous system |
CP | cerebral palsy |
CSF | cerebrospinal fluid |
CT | computed tomography |
CTA | computed tomography angiography |
CVA | cerebrovascular accident |
EEG | electroencephalography |
EMG | electromyography |
ICP | intracranial pressure |
LOC | loss of consciousness |
LP | lumbar puncture |
MEG | magnetoencephalography |
MRI | magnetic resonance imaging |
MS | multiple sclerosis |
MSI | magnetic source imaging |
NCV | nerve conduction velocity |
PET | position emission tomography |
PNS | parasympathetic nervous system |