Anatomy 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 💡 Explanation Laryngeal membranes are classified into extrinsic and intrinsic. Extrinsic membranes of larynx are all, EXCEPT? ✓ Correct Answer: C. Quadrangular membrane