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The Ear and Hearing

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The Ear and Hearing Ms. Cotter Ear Anatomy 3 Parts of the Ear Outer Ear Middle Ear Inner Ear Outer Ear Ear Lobe Pinna Ear Canal Ear Drum Tympanic Membrane ... – PowerPoint PPT presentation

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Title: The Ear and Hearing


1
The Ear and Hearing
  • Ms. Cotter

2
Ear Anatomy
  • 3 Parts of the Ear
  • Outer Ear
  • Middle Ear
  • Inner Ear

3
Outer Ear
  • Ear Lobe Pinna
  • Ear Canal
  • Ear Drum Tympanic Membrane

4
Middle Ear
  • Contains the bones
  • Smallest bones in the body
  • Malleus
  • Incus
  • Footplate of stapes in open window - Stirrup
  • Contains Eustachian tube
  • Equalizes pressure in the ear
  • When swimming or flying you can feel the pressure
    equalize.

5
Inner Ear
  • Semicircular Canals labyrinth
  • Cochlea
  • Hearing system
  • Small hairs on the surface that turn the
    vibration into chemical reaction for the brain.
  • Auditory Nerve - VIII

6
Type of Hearing Loss
  • Conductive
  • Sensorineural
  • Mixed some of both
  • http//homepages.dsu.edu/paulicr/glossary/definiti
    ons/audiogram.htm
  • Audiogram illustrations

7
The Ear
8
Conductive Hearing Loss
  • Outer and Middle Ear
  • Obstruction in canal
  • Ear Wax
  • Tumor
  • Malformation
  • Damage to the ear drum
  • Fluid in ear

9
Sensorineural Hearing Loss
  • Inner Ear
  • Cochlear
  • VIII Nerve
  • Permanent Hearing Loss
  • http//www.musicandhearing.org/00000194c40c43e14/0
    0000194d2096870d/index.html
  • Sample sounds
  • http//www.phonak.com/consumer/hearing/hearingloss
    demo.htm
  • Sample sounds

10
Sensorineural Continued
  • Types of hearing loss
  • Genetics
  • Meningitis
  • Anoxia lack of oxygen
  • Heard trauma
  • Neurofibromatosis tumors
  • Exposure to noise
  • Aging
  • Measles, mumps, rubella

11
Mixed Hearing Loss
  • Combination of both conductive and sensorineural
    hearing loss.

12
Hearing Loss Cites
  • http//www.sesa.org/CEEHI/hearingloss/typeloss.htm
    l
  • hearing loss cite
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