The conus elasticus (cricovocal membrane) is a fibroelastic membrane in the larynx. Which statement correctly describes it?

• A It extends from the thyroid cartilage superiorly to the arytenoid cartilage inferiorly
• B It forms the framework of the false vocal cords (vestibular folds)
• C It is pierced by the external laryngeal nerve and superior laryngeal vessels
• D Its upper free edge forms the vocal ligament and it arises from the cricoid cartilage ✓

Explanation

The conus elasticus arises from the superior border of the cricoid cartilage and extends superiorly; its thickened upper free edge forms the vocal ligament. It is the submucosal fibroelastic membrane of the subglottis and glottis. The quadrangular membrane (not conus elasticus) forms the framework of the false vocal cords and lies in the supraglottis.

Reference: Gray's Anatomy, 42nd ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.