ears 1. structure and functions of the ears 2 structures of the ears external ear external ear...
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Ears
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Structure and functions of the ears
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Structures of the ears External earExternal ear Middle earMiddle ear
Also known as the tympanic cavity
Inner earInner earAlso known as
the labyrinth
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Understanding the functions of the ear
External earExternal earPinnaPinnaExternal auditory External auditory canalcanal
Contains cerumenContains cerumenTympanic Tympanic membranemembrane
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Understanding the functions of the ear
Middle earMiddle ear
OssiclesOssicles Hammer or
malleus Anvil or incus Stirrup or stapes
Eustachian tubeEustachian tube
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Understanding the functions of the ear
Inner earInner ear
CochleaCochlea
Semicircular Semicircular canalscanals
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EarsReviewReview
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Understanding the functions of the ear
Pathway of Pathway of hearinghearingTrace the pathway Trace the pathway of hearing.of hearing.Discuss the process Discuss the process of hearing.of hearing.What are decibels?What are decibels?
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Understanding the functions of the ear
What is occurring at each structure?
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Review the
pathway of
hearing
Healthy Hearing
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How do you protect your hearing?What is the relevance to healthy hearing?
Understanding the functions of the ear
Sound ActivitySound Activity
What is a sound byte?What is a sound byte?
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Short bit of sound or clip from a Short bit of sound or clip from a longer recording. longer recording.
Disorders of the ear
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Disorders of the ear
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Disorders of the ear External otitis
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Discuss what you see in this picture? (Besides a Q-tip!)
What causes external otitis?
How can it be prevented?
Disorders of the earOtitis mediaOtitis mediaWhat is otitis media?What is otitis media?Who is most at Who is most at
risk of having risk of having
otitis media? Why?otitis media? Why?What are the treatment options?What are the treatment options?http://http://www.medicinenet.com/www.medicinenet.com/anatomy_of_an_ear_infection_anatomy_of_an_ear_infection_pictures_slideshow/article.htmpictures_slideshow/article.htm
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Disorders of the ear
OtosclerosisOtosclerosisWhat is it?What is it?
Oto- sclerosisOto- sclerosis
What causes it?What causes it?
Why is a stapedectomy useful Why is a stapedectomy useful in treating otosclerosis?in treating otosclerosis?
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Disorders of the ear
Meniere’s diseaseMeniere’s disease
What are the What are the symptoms of symptoms of Meniere’s disease?Meniere’s disease?
What causes these What causes these symptoms?symptoms?
How is it treated?How is it treated?
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Disorders of the ear
TinnitusTinnitusWhat is tinnitus?What is tinnitus?
Explain this statement:Explain this statement:
Tinnitus is a symptom, Tinnitus is a symptom, not a disorder.not a disorder.
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Disorders of the earPresbycusisPresbycusisWhat is What is presbycusis?presbycusis?
Who is most likely Who is most likely to develop to develop presbycusis?presbycusis?
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Testing for hearing losshttp://www.youtube.com/watch?v=7BQFKnP-7Qg
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Weber testRinne test
Compare these two tests. How are they diagnostic?
Structure, Functions and Disorders of the Ear
The EndThe End
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