<prompt> The secondary tympanic membrane is present overRound windowOval windowLateral wall of middle earScala media  <response>: 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 