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Reissner's Membrane

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Reissner's membrane [′rīs·nərz ‚mem‚brān]
(anatomy)
The anterior wall of the cochlear duct, which separates the cochlear duct from the scala vestibuli. Also known as vestibular membrane of Reissner.

Reissner’s Membrane 

(named after the German anatomist E. Reissner, 1824–78), the part of the wall of the membranous canal of the cochlea of the inner ear in mammals, including man, that divides the cavity of the canal from the cavity of the cochlear portion of the bony labyrinth.

The membrane consists of two very thin layers of cells. The outer layer, a fibrous connective-tissue membrane that becomes the periosteum of the bony canal, faces the side of the cavity of the bony labyrinth. The inner layer, which consists of squamous epithelial cells, faces the interior of the membranous canal of the cochlea.



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This condition is believed to be caused by an elevated level of endolymphatic pressure, which is likely due to poor absorption from the endolymphatic sac or excess secretion of endolymph, and results in distention of Reissner's membrane.
The greater impact that air in the scala vestibuli had on hearing might have been the result of a collapse of Reissner's membrane.
 
 
 
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