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22 Cards in this Set
- Front
- Back
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The cochlea is responsible for __________ ___________ _____________ of the stapes footplate into _________ _________.
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converting mechanical displacement
neural impulses |
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The IHCs and the OHCs are ____________ and ___________ distinct from one another.
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anatomically
functionally |
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___% of afferent fibers contact IHCs
___% of afferent fibers contact OHCs ___% of efferent fiers contact OHCs |
95
5 80 |
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Most of the info going up from the organ of coti to the auditory cortex is coming from ______.
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IHCs
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The majority of info coming down from the cortex to the organ of corti is going to _____.
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OHCs
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The longest cilia of OHCs (tallest row) contact the ___________ _________ but no cilia of IHCs do. (important for modern theory of hearing)
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tectorial membrane
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Cilia act as _______ ________ transmitting ___________ to the ________ receptor cells. Remember the OHCs and IHCs are __________ and _______. When they are moved, they will take the __________ to the receptor cells.
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micro levers
vibrations sensory resilient stiff vibrations |
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The cilia modify ______ ____________ __________ that flows into the receptor cells.
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local electircal current
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Within the organ of corti there are small _________ __________ ________ sources (like little batteries with positive and negative potential). These current sources are used to feed __________ info into the ICHs and OHCs.
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local electrical current
vibratory |
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It is believed that the ______ may feed ___________ energy back from the _______ to the ____________ __________.
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cilia
mechanical OCHs tectorial membrane |
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Not only does the tectorial membrane ___________ the hair cells to generate a neural __________, but also the ____ are believed to feed _______ back into the tectorial membrane.
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stimulate
impulse cilia energy |
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The basilar membrane is ______ in comparison to the more ___________ tectorial membrane.
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stiff
compliant |
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The OHCs get a better ride sitting in the ___________ of the trampoline. The IHCS sitting on the _________ section (on the OSL), are more on the ____________ of the trampoline and don't receive as much __________.
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middle
inner periphery motion |
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OHCs are __________ by the action of the ____________ _______ and the _____________ in tectorial membrane and basilar membrane stiffness.
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sheared
traveling wave differential |
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OHCs have __________ surfaces on the top and __________ surfaces on the bottom. In addition, their __________ walls act more like ________ cells than __________ cells.
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ciliary
neural lateral motile sensory |
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The __________ is the substance of the cell, __________ of the nucleus. __________ is a fine network formed by cells.
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cytoplasm
exclusive reticulum |
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What refers to the ultra microscopic spaces occurring between the membranes of the flattened sacs of the cytoplasmic reticulum?
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cisternae
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What is found in cell areas where there is tissue movement?
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actin protein
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OHCs have specialized ______________ reticulum including lateral ___________ __________ whereas IHCs do not.
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endoplasmic
lateral subsurface |
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OHCs are made up of vertical ______-______ structures. The walls have several layers of __________ _________ like those of ___________ cells. The OHC walls _________ and _________ .
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plate like
subsurface membranes contractile contract expand |
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Next to the subsurface membranes of the OHCs are numerous _______________ which are the energy producing elements of __________ _______. The mitochondria produce ______.
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mitochondria
motile cells actin |
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The wall of the OHC can rub back and forth and up and down so that the cell can __________ its length or ___________ and ___________ itself.
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extend
contract shorten |
