Question
| A. | A |
| B. |
B |
| C. |
C |
| D. |
D |
|
Correct Answer � D Explanation |
 |
Answer – D
In the given image
A – Pillar cells
B – Outer hair cell
C – Deiters cell
D – Inner hair cell
Spiral ganglion
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In the inner ear, a channel formed by a latticework of bone spirals around in parallel to the coiled labyrinth.
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This channel is called Rosenthal’s canal within which reside the somata of the spiral ganglion neurons.
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Each cell body emits a peripheral process that extends toward the organ of Corti and a central process that projects into the auditory nerve.
The somata of spiral ganglion neurons lie in the Rosenthal canal.
· The central process of ganglion cells form the cochlear nerve.
· Spiral ganglion supplies both inner and outer hair cells
· There are two types of ganglion cells. Type 1 and type 2. Type 1 supplies the inner hair cell and type 2 supplies the outer hair cell
· 95% of fibres of spiral ganglion supplies the inner hair cells. Only 5% of them supply the outer hair cells.