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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 |