Left Conus Elasticus (Cricovocal Membrane) (Conus elasticus sinister)
Educational content only — not medical advice.
Anatomy
The left conus elasticus (cricovocal membrane / cricothyroid membrane) is a fibroelastic sheet extending from the upper border of the cricoid arch upward and inward to terminate as the free left vocal ligament. It forms the anterior and lateral walls of the subglottic laryngeal cavity.
Clinical notes
Subglottic stenosis can involve pathological cicatricial fibrosis and narrowing of the airway lined by the conus elasticus following prolonged endotracheal intubation.
Related structures
Educational references
FAQ
What is the role of the Left Conus Elasticus (Cricovocal Membrane)?
The left conus elasticus (cricovocal membrane / cricothyroid membrane) is a fibroelastic sheet extending from the upper border of the cricoid arch upward and inward to terminate as the free left vocal ligament. It forms the anterior and lateral walls of the subglottic laryngeal cavity.
Why is the Left Conus Elasticus (Cricovocal Membrane) clinically important?
Subglottic stenosis can involve pathological cicatricial fibrosis and narrowing of the airway lined by the conus elasticus following prolonged endotracheal intubation.
Source & license
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