3.04 Functions and disorders of the ear 3.04 Understand the functions and disorders of the sensory system 1
2 Essential Questions What are the functions of the sensory system? What are some disorders of the sensory system? How are sensory system disorders treated? How do you relate the body’s communication to the sensory system?
Understanding the functions of the ear: Hearing 3.04 Understand the functions and disorders of the sensory system 3
Understanding the functions of the ear External ear Pinna Pinna External auditory canal External auditory canal Contains cerumen Tympanic membrane Tympanic membrane 3.04 Understand the functions and disorders of the sensory system 4
Understanding the functions of the ear Middle ear Ossicles Ossicles Eustachian tube Eustachian tube 3.04 Understand the functions and disorders of the sensory system 5
Understanding the functions of the ear Inner ear Cochlea Cochlea Semicircular canals Semicircular canals 3.04 Understand the functions and disorders of the sensory system 6
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? 3.04 Understand the functions and disorders of the sensory system 7
Understanding the functions of the ear What is occurring at each structure? 3.04 Understand the functions and disorders of the sensory system 8 Review the pathway of hearing
Healthy Hearing 3.04 Understand the functions and disorders of the sensory system 9 How do you protect your hearing? What is the relevance to healthy hearing?
Understanding the functions of the ear Sound Activity What is a sound byte? 3.04 Understand the functions and disorders of the sensory system 10 Short bit of sound or clip from a longer recording.
Disorders of the ear 3.04 Understand the functions and disorders of the sensory system 11
Disorders of the ear 3.04 Understand the functions and disorders of the sensory system 12
Disorders of the ear External otitis 3.04 Understand the functions and disorders of the sensory system 13 Discuss what you see in this picture? (Besides a Q-tip!) What causes external otitis? How can it be prevented?
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? 3.04 Understand the functions and disorders of the sensory system 14
Disorders of the ear Otosclerosis What is it? What is it? Oto- sclerosis What causes it? What causes it? Why is a stapedectomy useful in treating otosclerosis? Why is a stapedectomy useful in treating otosclerosis? 3.04 Understand the functions and disorders of the sensory system 15
Disorders of the ear Meniere’s disease What are the symptoms of Meniere’s disease? What are the symptoms of Meniere’s disease? What causes these symptoms? What causes these symptoms? How is it treated? How is it treated? 3.04 Understand the functions and disorders of the sensory system 16
Disorders of the ear Tinnitus What is tinnitus? What is tinnitus? Explain this statement: Tinnitus is a symptom, not a disorder Understand the functions and disorders of the sensory system 17
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? 3.04 Understand the functions and disorders of the sensory system 18
Testing for hearing loss 3.04 Understand the functions and disorders of the sensory system 19 Weber test Rinne test Compare these two tests. How are they diagnostic?
3.04 Understand the functions and disorders of the sensory system 20 Essential Questions What are the functions of the sensory system? What are some disorders of the sensory system? How are sensory system disorders treated? How do you relate the body’s communication to the sensory system?
3.04 Functions and disorders of the ear The End 3.04 Understand the functions and disorders of the sensory system 21