LIGAMENTS OF THE LARYNX 



1217 



(3) Connections between the Larynx and Neighbouring Structures 



The hyo-thyreoid membrane [membrana hyothyreoidea] (figs. 977, 980, 981) 

 is a loose, fibrous, elastic sheet, binding together the thyreoid cartilage and hyoid 

 bone. It extends from the superior margin of the former to the greater cornua and 



Fig. 982. Scheme of Rima, showing Action of Posterior Crico-aryt^noid Muscle, 



WHICH DRAAVS TH^ ARYTENOID CARTILAGE FROM I TO II. (Modified from Stirling.) 



superior margin of the body of the latter. The superior laryngeal artery and vein 

 and the internal laryngeal nerve pass through it from the side. Its posterior and 

 lateral edge is cord-Uke, consisting of elastic fibres which stretch as the lateral 



Fig. 983. -Scheme showing Action of the Transverse Arytenoid drawing Aryt.enoid 



Cartilage from Neutral Position I to II. (Modified from Stirling.) 



hyo-thyreoid ligament [lig. hyothyreoideum lateral e] from the superior cornu of the 

 thyreoid to the greater cornu of the hyoid. A small cartilago triticea is sometimes 

 present in this band. The middle part, median hyo-thyreoid ligament [hg. 



Fig. 984. — Scheme showing Action of Thyreo-arty^noid drawing the Vocal Processes 

 and the Vocal Ligaments from II to I. (Modified from Stirling.) 



hyothyreoideum medium] thick and elastic, extends from the superior thyreoid 

 notch upward behind the body of the hyoid to be attached to its superior margin, 

 the hyoid bursa being interposed between the bone and the membrane. 



77 



