This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Special Senses, Subject name: Physiology
Neurotransmitter of inner hair cells 
Select and explain. 
A. GABA, B. Glutamate, C. Glycine, D. Acetyl choline
B: Glutamate
Answer: B: Glutamate 
Explanation: Hair cells: - Hair cells are surrounded by endolymph Endolymph is high in K+ concentration. Basilar fibre vibration | Shearing force created in Reticular lamina & tectorial membrane | Bending of the stereocilia | Opening of K+ channels | K+ enter hair cells | Depolarization Of hair cells. | Depolarization then open voltage gated Ca++ channels. | Ca++ enter hair cells | Glutamate (NT) is released at the synapse | Glutamate causes excitation of the VIIIth nerve