Laryngeal membranes are classified into extrinsic and intrinsic. Extrinsic membranes of larynx are all, EXCEPT:
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.
Cricothyroid membrane
Thyrohyoid membrane
Quadrangular membrane
Cricotracheal membrane