豚鼠和人类耳蜗蜗轴内耳蜗神经的形成。

Formation of the cochlear nerve in the modiolus of the guinea pig and human cochleae.

作者信息

Tuncel Mürvet, Sürücü H Selçuk, Erbil K Mine, Konan Ali

机构信息

Department of Anatomy, Hacettepe University, Ankara, Turkey.

出版信息

Arch Med Res. 2005 Sep-Oct;36(5):436-40. doi: 10.1016/j.arcmed.2005.02.003.

DOI:10.1016/j.arcmed.2005.02.003

PMID:16099318

Abstract

BACKGROUND

Central processes of the bipolar neurons in the spiral ganglion converge in the modiolus to form the initial portion of the auditory branch (cochlear nerve) of the eighth cranial nerve. This occurs before the cochlear nerve passes through the internal auditory meatus. The neurons of the spiral ganglion send their central processes towards the internal acoustic meatus, through a single canal to form the cochlear nerve. These processes are described in many textbooks as running through numerous longitudinal small canals called canales longitudinales modioli before entering the internal acoustic meatus. Results of this study indicated that the term; "canalis longitudinalis modioli" was considered to be more appropriate than the former.

METHODS

Central processes of the bipolar neurons in the spiral ganglion of the guinea pig and human cochleae were investigated using stereo, light and electron microscopy.

RESULTS

Detailed examination of the guinea pig and human cochleae by light, electron and stereomicroscopy did not reveal multiple longitudinal canals but a single canal for the cochlear nerve.

CONCLUSIONS

The singular term canalis longitudinalis modioli is more appropriate than canales longitudinales modioli.

摘要

背景

螺旋神经节双极神经元的中枢突在蜗轴汇聚，形成第八对脑神经听觉支（蜗神经）的起始部分。此过程发生在蜗神经穿过内耳道之前。螺旋神经节的神经元将其中枢突通过一条单一管道朝内耳道延伸，形成蜗神经。许多教科书描述这些突起在进入内耳道之前穿过众多称为蜗轴纵管的纵向小管道。本研究结果表明，“蜗轴纵管”这一术语比之前的表述更为恰当。