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19 Cards in this Set
- Front
- Back
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Inner Hair cells describe:
shape number of rows inclination which side of cochlea |
droplet, 1 row, same as inner rod, modiolus
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Inner hair cell needs ______ for support because it comes ____ _____
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phalangeal cell, up high
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How many sterocilia cellsin each inner hair cell and how are they aligned?
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2 rows, parallel to the axis of the BM
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how many cilia for IHC?
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48
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steroclilia of IHC describe:
texture, longer/shorter where? |
stiff,resilient, longer toward the outside and toward apex of cochlea
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how many IHCs in the ear?
how many IHCs per mm at the base of BM? how many IHCs per mm at the apex? |
3550, 80, 115
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Outer Hair Cell (OHC) Describe:
shape number of rows inclination which side of cochlea supported by? |
cylindrical, 3 near the base, 5 near the apex, towards outer rod of corti, outer core, Deiter's cell
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The OHC body is ____ at the apex and _____ at the base of the cochlea
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longer, shorter
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How many OHC at the apex?
How many OHC at the base? How many total in the inner ear/ |
70, 130, 13,500
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What do the sterocilia form of the OHC
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V or W shape, on the side - base directed towards OSL
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Just like the IHC, the sterocillia of the OHC is _____ to the outside and ______ toward the apex
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longer, longer
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OHC respond primarily to _______ shearing
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lateral
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OHC stereocillia are covered with a _____ _______
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plasma membrane
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Unlike the IHC, OHC have _____
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motility
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Remember the _____ of the hair cell sits on the BM
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base
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A sound wave will be sent down along the ____, this distortion will tip/move the hair cell ______. This is primarily responsible for the response of the outer hair cell, not the _____ movement of the BM.
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BM, laterally/radially, longitudinal
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Each inner and outer hair cell has (4):
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cell body
cuticular plate at the apex kinocilium (disappears once you reach adulthood) sterocilia |
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The kinocilium of the IHC and OHC becomes what when a human approaches adulthood?
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basal body
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The INC stereocillia is coarser than the OHC sterocilia. T/F
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TRUE
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