Laryngeal membranes are classified into extrinsic and intrinsic. Extrinsic membranes of larynx are all, EXCEPT:: (A) Cricothyroid membrane, (B) Thyrohyoid membrane, (C) Quadrangular membrane, (D) Cricotracheal membrane
Answer is C. Extrinsic membranes of larynx:Thyrohyoid membraneCricothyroid membraneCricotracheal membraneIntrinsic membranes of larynx:Cricovocal membraneQuadrangular membrane Ref: Diseases of Ear, Nose and Throat by PL Dhingra, 4th edition, Page 54, 55.