| Term | Definition |
| Conus Elasticus/Cricovocal Membrane location | continuous sheet that connects thyroid, cricoid, and arytenoid cartilages - originate from superior border of cricoid |
| Conus Elasticus/Cricovocal Membrane function | terminate as free thickened margins from vocal process of arytenoid to thyroid angle and gives rise to the vocal ligament at the free ends |
| Quadrangular Membranes location | arise from epiglottis and thyroid angle, course to medial surfaces of arytenoids terminating inferiorly as free thickened margins called ventricular ligaments and terminating superiorly as aryepiglottic folds |
| Quadrangular Membranes function | forms the false vocal folds and the aryepiglottic folds |