Lateral wall of middle ear is formed by:: (A) Tegmen tympani, (B) Mastoid process, (C) Promontory, (D) Tympanic membrane
Answer is D. Roof - Thin plate called as tegmen tympaniFloor - Jugular bulbAnterior wall - Internal carotid aeryPosterior wall - Lies close to mastoid air cellsMedial wall - labyrinthLateral wall - tympanic membrane