Transcript Ears
Ears 1 Structure and functions of the ears 2 Structures of the ears External ear Middle ear Also known as the tympanic cavity Inner ear Also known as the labyrinth 3 Understanding the functions of the ear External ear Pinna External auditory canal Contains cerumen Tympanic membrane 4 Understanding the functions of the ear Middle ear Ossicles Hammer or malleus Anvil or incus Stirrup or stapes Eustachian tube 5 Understanding the functions of the ear Inner ear Cochlea Semicircular canals 6 Ears Name the structures… Review 7 Understanding the functions of the ear Pathway of hearing Trace the pathway of hearing. Discuss the process of hearing. What are decibels? 8 Understanding the functions of the ear What is occurring at each structure? 9 Healthy Hearing How do you protect your hearing? What is the relevance to healthy hearing? 10 Understanding the functions of the ear Sound Activity What is a sound byte? Short bit of sound or clip from a longer recording. 11 Disorders of the ear 12 Disorders of the ear 13 Disorders of the ear External otitis Discuss what you see in this picture? (Besides a Q-tip!) What causes external otitis? How can it be prevented? 14 Disorders of the ear Otitis media What is otitis media? Who is most at risk of having otitis media? Why? What are the treatment options? http://www.medicinen et.com/anatomy_of_an_ ear_infection_pictures_s lideshow/article.htm 15 Disorders of the ear Otosclerosis What is it? Oto- sclerosis What causes it? Why is a stapedectomy useful in treating otosclerosis? 16 Disorders of the ear Meniere’s disease What are the symptoms of Meniere’s disease? What causes these symptoms? How is it treated? 17 Disorders of the ear Tinnitus What is tinnitus? Explain this statement: Tinnitus is a symptom, not a disorder. 18 Disorders of the ear Presbycusis What is presbycusis? Who is most likely to develop presbycusis? 19 Testing for hearing loss http://www.youtube.com/watch?v=7 BQFKnP-7Qg Rinne test Weber test Compare these two tests. How are they diagnostic? 20 Structure, Functions and Disorders of the Ear The End 21