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11 Cards in this Set
- Front
- Back
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In ossicular vibration, the ______ moves in a ______ motion - NOT ____ and _____.
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malleus, pivotal, back, forth
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The malleus vibrates around a _______ point with greater vibration at the ______.
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pivot, base
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The maximum vibration on the tympanic membrane is at the ______. There is less displacement at the __________.
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umbo (greatest at the midpoint - like feet on a trampoline), peripherary
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The ossicular chain vibrates around an ________ _____ as if going through the ______ process of the _________.
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imaginary axis, short, malleus
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Vibration comes through the ________ _____. The ______ vibrates around that axis (like a door with hinges) - as the ________ increases, it's as if the axis goes through each _____ of the stapes.
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posterior crus, stapes, intensity, crus
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The middle ear transformer action solves the problem of the _________ of different mediums and the need to move from one to the other.
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imedance
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Gas has a relatively _____ impedance while fluid has a relatively _____ impedance.
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low, high
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The middle ear operates as what to solve the different impedance levels?
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impedance matching transformer
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What is the area ratio of the middle ear?
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17:1
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What is the lever ratio?
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1.3:1
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The sound pressure ratio is ____ and it corresponds to ____ db.
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22:1, 27
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