Card 10 / 13: Where is the dorsal root ganglion of the auditory portion of VIII ?
A.)
In the medulla.
B.)
In the bony spiral lamina.
C.)
In the internal auditory meatus.
D.)
In the facial canal.
Answer:
B.) In the bony spiral lamina.
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The cochlear duct winds around the bony spiral lamina in the petrous part of the temporal bone. Within this part of the bone reside the cell bodies of the auditory axons. This ganglion is therefore named the spiral ganglion. The bone is blue on this section. The nerve is dark pink in the center.
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Neuroanatomy 09 The Auditory System
Author:
M.D.Stephen VoronLecturer
University of Utah
USA
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