Quadrangular membrane
| Larynx: Quadrangular membrane | |
|---|---|
| File:Gray954.png The quadrangular membrane runs from the aryepiglottic fold to the vestibular ligament. | |
| Details | |
| Identifiers | |
| Latin | membrana quadrangularis |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terminology [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The quadrangular membrane is a layer of submucosa.[1][better source needed] It extends between the lateral margin of the epiglottis, and the apex and fovea triangularis of the ipsilateral arytenoid cartilage. It has free superior and inferior borders.[2]
Anatomy
[edit | edit source]The free superior border inclines posteriorly, forming the aryepiglottic ligament (the central component of the aryepiglottic fold within which the cuneiform cartilages are contained). Posteriorly, it contributes to the formation of the median corniculopharyngeal ligament.[2]
The free inferior border forms the vestibular ligament[2] (which together with the overlying mucosa constitutes the vestibular fold). The lower fibres of the quadrangular ligament condense to form the false vocal cords or the vestibular fold, while the upper fibres of the cricovocal ligaments condense to form the true vocal cord. The superior border is in the aryepiglottic fold.[citation needed]
References
[edit | edit source]- ^ Prelab Images - Carotid Sheath, Pharynx, & Larynx Archived May 17, 2008, at the Wayback Machine
- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
External links
[edit | edit source]- lesson11 at The Anatomy Lesson by Wesley Norman (Georgetown University) (larynxmembranes)
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