Question
The peripheral processes of spinal ganglion end at:
A. A
B. B
C. C
D. D
Show Answer
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Correct Answer » C Explanation |
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Ans: C. C
(Ref. Ganong 25/e p201, 24/e p201-202)
- The peripheral processes of spiral ganglia ends at inner hair cells (marked as C in the given image).
- Cell bodies of sensory neurons around bases of hair cells are located in spiral ganglion within modiolus.
- Modiolus – Bony core around which cochlea is wound.
- 90% to 95% of sensory neurons innervate inner hair cells.
- Only 5-10% innervates more numerous outer hair cells.