Poda III final

Card Set Information

Author:
alvo2234
ID:
189322
Filename:
Poda III final
Updated:
2012-12-13 13:56:34
Tags:
DR Leonard
Folders:

Description:
Phatho of the Ear
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  1. parts of the ear
    • Vestibular
    • Auditory
    • -inner
    • -middle
    • -outer
  2. parts of the vestibular inner ear
    • saccule
    • utricle
    • -detect linear acceleration
  3. parts of the auditory inner ear
    • cochlea
    • -detects sound
  4. nerves to brain- internal auditory meatus
    VII, VIIIa, VIIIv
  5. bony labyrinth
    perilymph
  6. membraneous labyrinth
    enodlymph
  7. acoustic tumor affects
    hearing and facial features
  8. inner ear infection affects
    • auditory
    • vestibular
  9. what does the fluid displacement in the cochlea code for
    • intensity
    • frequency of sound
    • localization
    • patterns
    • -speech
  10. dB for normal conversation
    60-65
  11. dB for factory noise
    80
  12. dB for orchestra playing loud
    100
  13. Most common ailments in vestibular
    • inner ear infections
    • acoustic neuromas
    • menieres disease
    • aging
  14. most common non neural ailments for auditory
    • infections
    • otitis externa (swimmers ear)
    • otitis media (upper respiratory infections)
    • tempanic membrane lesions
    • -huge pressure changes
  15. most common neural ailments in auditory
    • sensorineural hearing loss
    • tinnitus
    • inner ear infections
    • aging
  16. hearing loss can be
    • -conductive- fluid disruption
    • -sensorineural
    • -critical period- period when you need sensation in order to develop correctly
  17. functions of the vestibular system
    • 1. maintains visual acuity- minimize retinal image motion during head movements
    • 2. critical for perception of spatial orientation and self motion
    • 3. control posture and equilibrium
  18. dysfunction of vestibular system can cause
    • vertigo/dizziness
    • nystagmus
    • ataxia
    • nausea

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