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26 Cards in this Set
- Front
- Back
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Inner ear
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2 parts:
1. cochlea (snail part, hearing component) 2. vestibular (3 semicircular canals, balance) |
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vestibular
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3 semicircular canals
filled with fluid and hair cells perpendicular to each other as move, fluid moves involved with balance |
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eustachian tube
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maintains equal air pressure
allows ear drum to vibrate connects middle ear air cavity to throat if tube is blocked, then pressure increases/if in plane and could cause to burst if under water, can cause pain |
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outer ear
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auricle/pinna
serves as funnel sound waves and air directed towards the tynpanic membrane (ear drum) collects sound waves (energy) funnels sound waves conduction via air of sound waves funneled into middle ear |
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tynpanic membrane
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ear drum
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Divisions of the ear
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1. outer ear
2. middle ear 3. inner ear |
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cochlear
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filled in 2 sections with fluid
perilymph- fluid cause motion goes to temporal lobe where it is interpreted hearing mechanism AKA acoustic nerve |
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Audiologist
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person who measures hearing
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Audiology
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study of hearing
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Audiometry
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descriptive measurement of hearing
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Audiogram
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graph on which a person's ability to hear different pitches at different volumes of sound is recorded
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Middle ear
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connected to back of throat
air filled cavity within temporal bone Auditory Ossicles: 3 bones- free moving 1. malleus 2. incus 3. stapes air hits ear drum which vibrates causing ossicles to move converting air waves to mechanical energy |
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Auditory Ossicles:
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Air hits ear drum which vibrates ossicles to move converting air waves to mechanical energy
3 bones- free moving 1. malleus 2. incus 3. stapes |
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Atresia
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canal absent or clogged
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Otosclerosis
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ossicles inflamed and may fuse together
no transmission of sound affects sound waves in outer ear in air and mechanical in inner ear |
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Otitis media
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middle ear infection
ossicles become inflamed hearing impaired because of collection of fluids |
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Meniere's disease
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fluid in inner tube is under great pressure
vertigo dizzy nausea ringing/tinnitus due to vascular changes |
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Central auditory disorders
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essential auditory disorders
problem in brain stem hearing is fine acoustic neruoma (like tumor) growth developed may be operable |
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Sensorineural disorders
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nerve that leaves cochlea to brain/cochlea damages
most surgical/operable problem at the cochlear congenital, hereditary, time, prenatal listening to loud music meningitis ototoxic drugs tumor damage to hair cells meiere's disease presbycusis- old hearing |
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Non-organic loss
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everything is organically correct except oerson is not hearing
mysterical conversion- psychotic psychogenic/psychiatric reasons no organic problem not surgical |
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conductive disorders
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problems in the otuer or middle ear only
atresia otitis media otosclerosis punctured ear drum ear wax build up |
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Tinnitus
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sound arising in or around cochlea
ringing in ears may be distrubing and lead to emotional problems |
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Hearing based on
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baseline of 0
described as decibal losses |
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Hearing aids
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used for conductive types of hearing loss
sound waves are amplified |
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Prelingually deaf
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became deaf before speech was a skill
difficult to understand |
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valsafa technique
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blow nose slowly with air to equalize pressure in ear
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