Which of the following is NOT a content of medial wall of middle ear:: (A) Oval window, (B) Round window, (C) Processus cochleariformis, (D) Aditus ad antrum
Answer is D. Ans. (d) Aditus ad antrumReft Dhingra's ENT 6th edj 5-6* Aditus ad antrum is located on posterior wall. It is a doorway to antrum of mastoid.* Antrum is largest mastoid air cell.