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Ears 1. Structure and functions of the ears 2 Structures of the ears External ear External ear Middle ear Middle ear Also known as the tympanic cavity.

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Presentation on theme: "Ears 1. Structure and functions of the ears 2 Structures of the ears External ear External ear Middle ear Middle ear Also known as the tympanic cavity."— Presentation transcript:

1 Ears 1

2 Structure and functions of the ears 2

3 Structures of the ears External ear External ear Middle ear Middle ear Also known as the tympanic cavity Inner ear Inner ear Also known as the labyrinth 3

4 Understanding the functions of the ear External ear Pinna Pinna External auditory canal External auditory canal Contains cerumen Contains cerumen Tympanic membrane Tympanic membrane 4

5 Understanding the functions of the ear Middle ear Ossicles Ossicles Hammer or malleus Anvil or incus Stirrup or stapes Eustachian tube Eustachian tube 5

6 Understanding the functions of the ear Inner ear Cochlea Cochlea Semicircular canals Semicircular canals 6

7 Ears Review Review 7

8 Understanding the functions of the ear Pathway of hearing Trace the pathway of hearing. Trace the pathway of hearing. Discuss the process of hearing. Discuss the process of hearing. What are decibels? What are decibels? 8

9 Understanding the functions of the ear What is occurring at each structure? 9 Review the pathway of hearing

10 Healthy Hearing 10 How do you protect your hearing? What is the relevance to healthy hearing?

11 Understanding the functions of the ear Sound Activity What is a sound byte? 11 Short bit of sound or clip from a longer recording.

12 Disorders of the ear 12

13 Disorders of the ear 13

14 Disorders of the ear External otitis 14 Discuss what you see in this picture? (Besides a Q-tip!) What causes external otitis? How can it be prevented?

15 Disorders of the ear Otitis media What is otitis media? What is otitis media? Who is most at Who is most at risk of having otitis media? Why? What are the treatment options? What are the treatment options? et.com/anatomy_of_an_ ear_infection_pictures_s lideshow/article.htm et.com/anatomy_of_an_ ear_infection_pictures_s lideshow/article.htm et.com/anatomy_of_an_ ear_infection_pictures_s lideshow/article.htm et.com/anatomy_of_an_ ear_infection_pictures_s lideshow/article.htm 15

16 Disorders of the ear Otosclerosis What is it? What is it? Oto- sclerosis Oto- sclerosis What causes it? What causes it? Why is a stapedectomy useful in treating otosclerosis? Why is a stapedectomy useful in treating otosclerosis? 16

17 Disorders of the ear Menieres disease What are the symptoms of Menieres disease? What are the symptoms of Menieres disease? What causes these symptoms? What causes these symptoms? How is it treated? How is it treated? 17

18 Disorders of the ear Tinnitus What is tinnitus? What is tinnitus? Explain this statement: Tinnitus is a symptom, not a disorder. 18

19 Disorders of the ear Presbycusis What is presbycusis? What is presbycusis? Who is most likely to develop presbycusis? Who is most likely to develop presbycusis? 19

20 Testing for hearing loss BQFKnP-7Qg BQFKnP-7Qg 20 Weber test Rinne test Compare these two tests. How are they diagnostic?

21 Structure, Functions and Disorders of the Ear The End 21


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