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
The 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: Round window (present on the medial wall of the middle ear) is covered by the secondary tympanic membrane.Other structures present on the medial wall of the middle ear are:1.Promontory 2.Bony lateral semicircular canal 3.Oval window and 4.Facial nerve canalRef: Hazarika; 3rd ed; Pg 16