Results 241 to 250 of about 35,461 (280)

Ultrastructure of the round window membrane

The Laryngoscope, 1972
AbstractThe round window membrane presents the only non‐osseous wall of the labyrinth. Electron microscopic study of the round window membrane was undertaken in order to determine whether it could act as a route of transmission from the middle to the inner ear.In the cat round window membrane three layers can be identified.
R J, Bellucci, E G, Fisher, J, Rhodin
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Rupture of the round window membrane

The Journal of Laryngology & Otology, 1975
A perilymph leak into the middle ear through a ruptured round window membrane results in the symptoms of hearing loss, tinnitus and vertigo, either singly or in combination. The case histories of thirteen patients with such a fistula are described, these patients having in common a predisposing incident which had led to a rise of C.S.F.
J P, Tonkin, P, Fagan
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Permeability of round window membrane to 22Na or RISA

Archives of Oto-rhino-laryngology, 1976
Steven K Juhn
exaly   +3 more sources

The Ultrastructure of the Round Window Membrane of the Cat

ORL, 2010
The ultrastructure of the round window membrane of the cat was investigated. Three distinct layers were recognised and described. It was established that the outer epithelial layer is non-ciliated, but often contains microvilli. The middle layer, under the basement membrane, contains a large amount of collagen and elastic fibres in addition to ...
E, Miriszlai, I, Benedeczky, S, Csapó, H, Bodánszky   +3 more
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Review of Round Window Membrane Permeability

Acta Oto-Laryngologica, 1988
The round window membrane (RWM) is permeable to certain biological substances. Those substances that can pass through the RWM have the potential to cause inner ear damage, leading to functional disturbances. The RWM is permeable to water, and the existence of osmotically active substances in the middle ear cavity can induce an alteration of inner ear ...
S K, Juhn, Y, Hamaguchi, M, Goycoolea
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Permeability of the Implanted Round Window Membrane in the Cat:An Investigation Using Horseradish Peroxidase [PDF]

Acta Oto-Laryngologica, 1984
Publisher’s permission requested and denied.The round window membrane of seven cats was implanted with a Silastic® prosthesis 5 mm long. The membrane's permeability to horseradish peroxidase was investigated at different stages after implantation.
Clark, Graeme M., Franz, B., Bloom, D. M.   +2 more
exaly   +1 more source

Submicroscopic Studies of the Round Window Membrane

Acta Oto-Laryngologica, 1971
A study of the ultrastructure of the round window membrane revealed several interesting characteristics of functional significance. The membrane consists of three layers: (1) An external layer faces the tympanic cavity and varies from one to two cells in thickness.
T L, Richardson, E, Ishiyama, E W, Keels
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The Normal Chinchilla Round Window Membrane

Archives of Otolaryngology - Head and Neck Surgery, 1982
The chinchilla round window membrane consists of three layers: (1) an outer epithelial layer facing the middle ear cavity with tight junctions and numerous desmosomes, (2) a middle connective-tissue layer consisting of fibroblasts, fibrocytes, collagen, elastin, capillaries, and myelinated and unmyelinated nerves, and (3) an inner cellular layer with ...
P A, Schachern, M M, Paparella, A J, Duvall   +2 more
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Rupture of the Round Window Membrane

Otolaryngologic Clinics of North America, 1978
Considerable interest has been displayed in sudden sensori-neural deafness in recent years, and especially since Blair Simmons postulated that this could be caused by mechanical disruption of the membranes in the inner ear. The literature concerning such reports is reviewed briefly and two cases of rupture of the round window membrane resulting from ...
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The round Window Membrane: Otological Observations

Annals of Otology, Rhinology & Laryngology, 1983
The membrane of the round window serves as a barrier between the middle and inner ear and has a well-established role in cochlear physiology. It is important in many otological conditions; otitis media, otosclerosis, trauma, sequelae to drugs reaching the middle ear, tumors, congenital dysplasia, sudden deafness.
M M, Paparella, P A, Schachern, Y B, Choo   +2 more
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