Structure
The conus elasticus attaches inferiorly to the superior margin of the cricoid arch and lamina and extends to the internal surface of the thyroid cartilage. The superior margin of the conus elasticus is free and forms the vocal ligament, the base of the vocal fold.
As its name implies, it is elastic in nature and is funnel shaped and functions to maximize airflow from the trachea to the rima glottidis when speaking.
Related parts of the anatomy
Key Features & Anatomical Relations
The terminology surrounding the cricothyroid membrane and the conus elasticus varies considerably and other terms such as cricovocal membrane may also be used when describing the conus elasticus.
Learn more about this topic from other Elsevier products
Vocal Ligament
The vocal ligament is the medial edge of the laryngeal triangular membrane (also called conus elasticus).
