This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Assessment of Vestibular Function, Subject name: ENT
Otoacoustic emission arises from? 
Select and explain. 
A. Inner hair cell, B. Outer hair cell, C. Riessers membrane, D. Organ of otolith
B: Outer hair cell
Answer: B: Outer hair cell 
Explanation: ANSWER: (B) Outer hair cellREF: Dhingra 4th edition Page 29Repeat from June 2010OTOACOUSTIC EMISSIONS (OAES):They are low intensity sounds produced by outer hair cells of a normal cochlea and can be elicited by a very sensitive microphone placed in the external ear canal and an analysis by a computer. Sound produced by outer hair cells travels in a reverse direction: outer hair cells - basilar membrane - perilymph - oral window - ossicles - tympanic membrane - ear canal.