Quadrangular membrane

Larynx: Quadrangular membrane
The quadrangular membrane runs from the aryepiglottic fold to the vestibular ligament.
Details
Identifiers
Latin	membrana quadrangularis
TA	A06.2.09.022
FMA	55247
*Anatomical terminology* [edit on Wikidata]

The quadrangular membrane is a layer of submucosa.^[1] It contains the cuneiform cartilages.^[2] The membrane runs between the lateral aspects of the epiglottis and arytenoid cartilages on each side. The free inferior border of the quadrangular membrane is the vestibular fold which is the vestibular ligament when covered by mucosa. The superior border is in the aryepiglottic fold.

References

lesson11 at The Anatomy Lesson by Wesley Norman (Georgetown University) (larynxmembranes)

Anatomy of the larynx

Cartilage	major/unpaired: Epiglottis Vallecula Thyroid Adam's apple Cricoid minor/paired: Arytenoid Vocal process Muscular process Corniculate Cuneiform

Ligaments/folds	extrinsic ligaments: Hyoepiglottic ligament Thyrohyoid membrane Lateral ligament Median ligament Thyroepiglottic ligament Cricotracheal ligament intrinsic ligaments, upper: Quadrangular membrane Aryepiglottic Vestibular ligament/Vestibular fold intrinsic ligaments, lower: Cricothyroid ligament Median Lateral/Conus elasticus Vocal ligament/Vocal folds

Laryngeal cavity	Laryngeal inlet Vestibule Rima vestibuli Ventricle Rima glottidis/Glottis Infraglottic cavity

Other	Muscles of larynx Cricothyroid articulation Cricoarytenoid articulation

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