Citation, DOI, disclosures and article data
At the time the article was created Dan Youssef had no recorded disclosures.View Dan Youssef's current disclosures
At the time the article was last revised Craig Hacking had the following disclosures:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.View Craig Hacking's current disclosures
Boundaries and relations
superiorly: 1 cm below the lateral margin of the ventricle where the superior surface of the true vocal cord ends 1, although other definitions exist, such as 5 mm below the free margin of the vocal cord 2,3
inferiorly: inferior margin of the cricoid cartilage
laterally: conus elasticus/cricovocal membrane and paraglottic space; cricoid cartilage at the most inferior extent
In general, the subglottis is cylindrical but enlarges in diameter as it progresses caudally following the conus elasticus.
The inferior arcuate line of the vocal cord marks the cranial border, defined histologically as the transition point between the squamous epithelium of the true vocal cord and the respiratory epithelium of the subglottis 3.