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16 Cards in this Set
- Front
- Back
otitis media
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inflammation of the middle ear
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myringotomy
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surgical incision of the tympanic membrane
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otoscope
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instrument for examing the external canal and tympanic membrane
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speculum
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mirror for the otoscope
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presbycusis
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gradual deterioration and atrophy of the spiral canal of corti, loss in ability to hear high tones and speech sounds
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mechanisms of hearing
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external auditory canal-> middle ear-> internal ear-> corti
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rinne test
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test conduction and sensorineural deafness.
tuning fork on mastoid-> no longer audible-> near ear canal (air conduction)-> hear sound good. repeat starting near the ear canal-> no longer sound-> mastoid-> hear sounds (conduction deafness) |
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weber test
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test conduction deafness
tuning fork in the air around head |
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audiometry
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using an audiometer to test for hearing loss
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audiometer
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exposes ear to sound stimuli of different frequencies and intensities
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saccule and utricle
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part of the vestibular apparatus which maintains equilibrium contain a small thickened region called the macula
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barany test
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test for nystagmus
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nystagmus
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involuntary rolling of the eyes in any direction or the trailing of the eyes in one direction followed by rapid movement in the other direction
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romberg test
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determines integrity of the dorsal white column of the spinal cord which transmits impulses to the brain about proprio receptors involved with posture
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mechanisms of dynamic equilibrium
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semicircular canals are involved in this type of equilibrium which is the maintenance of the body position in response to rotational acceleration/decceleration
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mechanism of static equilibrium
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maculae in the vestibule contain the hair cells which are essential to this type of equilibrium, which is the maintenance of body posture in response to the force of gravity.
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