This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
Spiral ganglion innervates which cells in the following diagram 
Select and explain. 
A. A, B. B, C. C, D. D
A: A
Answer: A: A 
Explanation: Ans. (a) A(Ref: Ganong, 25th ed/p.202)Spiral ganglionContains cell bodies of the auditory nerve whose peripheral axons innervate hair cells on the organ of Corti90% to 95% of these sensory neurons innervate the inner hair cells (point A)Only 5-10% innervate the more numerous outer hair cells