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basilar membrane

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.02 sec.
basilar membrane [′bas·ə·lər ′mem‚brān]
(anatomy)
A membrane of the mammalian inner ear supporting the organ of Corti and separating two cochlear channels, the scala media and scala tympani.


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In his animated film, the cochlea is shown cut open and unrolled to make it easier to see what happens to the basilar membrane as the frequency of the incoming sound wave changes (see illustration).
[6] However, Robertson was able to demonstrate changes in the tuning curves of single spiral ganglion cells in the guinea pig basilar membrane after removal of perilymph.
The scientists suggest that the contractile proteins within these unusual cells pull on external fibers that are attached to the long, spiraling inner-ear structure called the basilar membrane.
 
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