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
Secondary tympanic membrane is present over 
Select and explain. 
A. Round Window, B. Oval window, C. Lateral wall of middle ear, D. Scala media
A: Round Window
Answer: A: Round Window 
Explanation: The scala tympani is closed by secondary tympanic membrane; it is also connected with the subarachnoid space through the aqueduct of cochlea. Ref: Dhingra 6th edition pg- 9