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12 Cards in this Set
- Front
- Back
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Central auditory system |
Subsystem of the auditory system, pathways from the coclear nucleus to the cerebral cortex |
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Efferent auditory pathway |
Descending auditory fibers through the brainstem to the organ of corti, also called centrifugal pathway |
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Cerebellopontine angle |
Junction of the pins and cerebellum, the area of the brainstem the houses coclear nucleus and nefual opening of internal auditory meatus |
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Cerebral cortex |
Surface of the brain consisting of 2 hemispheres and 4 lobes in each hemisphere. Involved in sensory, motor,band integration functions |
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Cerebrovascular accident |
CVA also called stroke, an abnormal condition in the brain caused by blockage in the blood supply, or bleeding, resulting in damage or death of brain tissue. This may affect speech, language and auditory ability areas. |
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Cerumen |
Waxy lubricant designed to reduce dryness, repel bacteria and bugs, and to keep canal supple and clean. Also called earwax. Only secreted in the cartilaginous portion of the canal |
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Characteristic frequency |
Frequency at which fewest dB are required to stimulate neuron firing |
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Chorda tympani |
Branch of the facial nerve passing through the middle ear. Carries information about taste from anterior portion of tongue to CNS |
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Clinical threshold |
Lowest sound pressure to which the subject responds positively at least twice during a clinical test |
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Cochlea |
The end organ of hearing, within the inner ear. Contains the organ of corti with hair cells. Divided into 3 canals connected by helicotrema at Apex. |
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Cochlear nerve |
Branch of the 8th cranial nerve that is formed as the hair cells within organ of corti synapse with the nerve fibers. Also called auditory branch. |
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Cochlear nucleus |
The first major nucleus of the central auditory system, located at pontomedullary junction |
