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The distribution of neuroglia and schwann cells in the 8th nerve of man

Published online by Cambridge University Press:  29 June 2007

M. W. M. Bridger  and
J. Farkashidy
M. W. M. Bridger
Affiliation:
Temporal Bone Laboratory, The Department of Otolaryngology, University of Toronto. Adderss for reprints: Department of Otolaryngology, The Middlesex Hospital, Mortimer Street, LondonWIN8AA.
J. Farkashidy
Affiliation:
Temporal Bone Laboratory, The Department of Otolaryngology, University of Toronto. Adderss for reprints: Department of Otolaryngology, The Middlesex Hospital, Mortimer Street, LondonWIN8AA.
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Abstract

The 8th cranial nerve has been dissected from 23 adult temporal bones at autopsy and studied histologically. It was found that neuroglial tissue, continuous with that in the brain stem, supported 8th nerve axons to just beyond the mid-point of the nerve. Lateral to this, axons are supported by Schwann cells and neurilemmal sheaths with a short [junctional zone] intervening. The point at which the transition occurred, from neuroglial to Schwann cell portions, was medial to the porus in 56 per cent of cases, level with the porus in 18 per cent, and within the internal auditory canal in 26 per cent. The relevance of these findings to some aspects of 8th nerve pathology and surgery is discussed.

Information

Type
Research Article
Information
The Journal of Laryngology & Otology , Volume 94 , Issue 12 , December 1980 , pp. 1353 - 1362
Copyright
Copyright © JLO (1984) Limited 1980

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