The laryngeal membranes and ligaments can be divided into two subgroups: the extrinsic ligaments (containing the thyrohyoid membrane, thyrohyoid ligaments, thyroepiglottic ligament, hyoepiglottic ligament, and cricotracheal ligament) and the intrinsic ligaments (containing the quadrangular membrane, vestibular ligament, conus elasticus, median cricothyroid ligament, and vocal ligament).