This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Endolymph is seen in ? 
Select and explain. 
A. Scala vestibule, B. Scala media, C. Scala tympani, D. Helicotrema
B: Scala media
Answer: B: Scala media 
Explanation: Ans. is 'b' i.e., Scala media * The scala vestibuli and scala tympani are filled with perilymph and the scala media is filled with endolymph.