quadrangular membrane

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Related to quadrangular membrane: Conus elasticus, cuneiform cartilage

qua·dran·gu·lar mem·brane

portion of the fibroelastic membrane of the larynx that lies superior to the laryngeal ventricle; its slightly thickened inferior edge, the vestibular ligament, underlies the vestibular fold of the larynx; it attaches anteriorly to the epiglottis and posteriorly to the lateral margin of the arytenoid and corniculate cartilages; its upper portion underlies the mucosa of the aryepiglottic fold, which separates the laryngeal vestibule from the piriform fossa of the laryngopharynx.
Farlex Partner Medical Dictionary © Farlex 2012

quadrangular membrane

The upper portion of the elastic membrane of the larynx extending from the aryepiglottic folds to the level of the ventricular folds below.
See also: membrane
Medical Dictionary, © 2009 Farlex and Partners


Kaspar, Prussian anatomist, 1802-1865.
Tourtual membrane - the elastic fibra membrane that extends from the ventricular fold of the larynx upward to the aryepiglottic fold. Synonym(s): quadrangular membrane
Tourtual sinus - the interval between the palatoglossal and palatopharyngeal arches above the tonsil, most obvious after the tonsil has regressed in the adult. Synonym(s): supratonsillar fossa
Medical Eponyms © Farlex 2012