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Related Experiment Videos

The round window membrane under normal and pathological conditions.

M V Goycoolea1

  • 1Department of Otolaryngology, University of Minnesota Medical School.

Acta Oto-Laryngologica. Supplementum
|January 1, 1992
PubMed
Summary
This summary is machine-generated.

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Clinical aspects of round window membrane permeability under normal and pathological conditions.

Acta oto-laryngologica·2001
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Gland formation in otitis media. An ultrastructural study in humans.

Acta oto-laryngologica·2001
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Mastoid and tympanomastoid procedures in otitis media: classic mastoidectomy (simple, modified, and radical) and current adaptations; open-cavity, closed-cavity, and intact-bridge tympanomastoidectomy.

Otolaryngologic clinics of North America·1999
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The theory of the trigger, the bridge and the transmigration in the pathogenesis of acquired cholesteatoma.

Acta oto-laryngologica·1999
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Round window membrane. Structure function and permeability: a review.

Microscopy research and technique·1997
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Oval and round window membrane changes in otitis media in the human. An ultrastructural study.

Acta oto-laryngologica·1995

The round window membrane, crucial for hearing, has three layers and aids sound transmission and inner ear fluid balance. Its permeability presents risks like ototoxicity but also opportunities for drug delivery.

Area of Science:

  • Otolaryngology
  • Auditory Physiology
  • Membrane Biology

Background:

  • The round window membrane (RWM) plays a key role in auditory function.
  • Understanding its structure and function is vital for treating hearing disorders.

Purpose of the Study:

  • To review current research on the RWM.
  • To describe evolved concepts regarding RWM structure and function.
  • To explore the implications of RWM permeability.

Main Methods:

  • Ultrastructural analysis of RWM in rodents, felines, and primates.
  • Review of existing literature on RWM physiology and function.

Main Results:

  • The RWM comprises three distinct layers: outer and inner epithelia, and a connective tissue core.

Related Experiment Videos

  • Evidence suggests the RWM facilitates mechanical energy release to labyrinthine fluids and offers an alternative cochlear sound entry route.
  • The RWM is implicated in perilymph secretion/absorption and serves a role in middle and inner ear defense.
  • RWM permeability is viewed as incidental, not a primary function.

    • Conclusions:

    • The RWM's structure supports its role in auditory mechanics and homeostasis.
    • While permeability poses ototoxicity risks, it also presents potential for targeted drug delivery to the inner ear.