The secondary tympanic membrane is present over
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
Round window
Oval window
Lateral wall of middle ear
Scala media
Ear