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Chapter 11. Hearing & Equilibrium
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A 9-year-old girl complained of ear pain due to an inflammation and build-up of fluids in the middle ear. She was diagnosed with a middle ear infection, acute otitis media of bacterial origin, and she was treated with an antibiotic. The middle ear contains
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A. hair cells that mediate linear acceleration.
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B. the membranous labyrinth containing endolymph.
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C. the bony labyrinth containing perilymph fluid.
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D. cochlear hair cells that mediate hearing.
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E. the auditory ossicles and the tensor tympani and stapedius muscles.
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A 2-year-old girl was diagnosed with a type of sensorineural deafness. After being evaluated by an audiologist, she was determined to be a good candidate for a cochlear implant. A cochlear implant is comprised of
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A. a microphone, transmitter, and receiver that converts sound into vibrating waves.
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B. artificial hair cells that are able to replace damaged hair cells in the inner ear.
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C. a microphone, amplifier, and speaker that can convert sound waves into electrical signals.
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D. a microphone, speech processor, transmitter, and receiver that converts sound into electrical impulses.
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E. a microphone, transmitter, and receiver that converts sound into numerical codes that provide information about pitch or loudness.
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After playing the violin for the Boston Symphony Orchestra for 18 years, a 40-year-old man was given the opportunity to follow the dream he had as a child to be a physician like his father. Compared to other students in his medical school class, what distinctive features might be expressed in his auditory system?
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A. The pitch of his conversational voice will be about 120 Hz compared to his younger male classmates whose voices are likely to have a pitch of about 250 Hz.
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B. When presented with musical tones, a larger area of his auditory cortex will be activated compared to the area activated in the cortex of his classmates who are not musically inclined.
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C. As a musician, he will be better able to localize sound than most of his classmates.
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D. The Wernicke area on the left side of his brain will be more concerned with melody, pitch, and sound.
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E. He will be able to distinguish about 2000 pitches; in contrast, his younger classmates will be able to distinguish ...