272245
Description
Quiz by Petite Piplup, updated more than 1 year ago
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Created by Petite Piplup
about 11 years ago
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Question 1
Question
What are the components of the middle ear?
Answer
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Vestibular canal, middle ear muscles, cochlea
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Cochlea, middle ear muscles, ossicles
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Eustachian tube, middle ear muscles, cochlea
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Ossicles, middle ear muscles, Eustachian tube
Question 2
Question
What is the function of the ossicles?
Answer
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Amplification
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Decreasing instensity
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Localisation
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Protection
Question 3
Question
How else does the middle ear increase amplification?
Answer
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The middle ear muscles vibrate helping sounds reverberate
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17:1 ratio of oval window to tympanic membrane leading to increased intenisity
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The opening and closing of the Eustachian tube intensifies vibrations
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The external auditory meatus is funnel shaped increasing amplitude further down
Question 4
Question
a) How does the middle ear help protect against loud noises?
b) What is this effective against?
Answer
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a) Ossicles send some vibrations back toward tympanic membrane and out the ear b) Short term and self-generated sounds
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a) Middle ear muscles clench around ossicles b) Only sounds above 45 deciBels
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a) Middle ear muscles clench around ossicles b) Short term and self-generated sounds
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a) Ossicles send some vibrations back toward tympanic membrane and out the earb) Only sounds above 45 deciBels
Question 5
Question
What is the function of the Eustachian tube?
Answer
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Equalize the frequency of most sounds so that they are within the human-hearing spectrum
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Decrease the intensity of sounds before they reach the inner ear
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Amplify sounds before they reach the inner ear
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Equalize pressure build-up in the ear
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