LARYNGEAL LIGAMENTS. 



329 



phagus. Its anterior surface, somewhat convex, is attached to 

 the tongue by the glosso-epiglottidean ligaments, and to the hyoid 

 bone by the hyo-epiglottidean muscle. 

 The posterior surface is rough, and 

 studded with numerous mucous glands. 

 The base articulates with the posterior 

 part of the body of the thyroid. 

 The apex is free, and somewhat curved 

 forwards. From the base of the epiglottis, 

 two lateral processes extend backwards; 

 these are the cuneiform cartilages, and 

 they are situated in the folds of mucous 

 membrane which stretch from the epi- 

 glottis to the arytenoid cartilages, being 

 attached to the latter by elastic ligaments, 

 together forming the false vocal cords. 



Fig. 112. 

 Posterior view of the epiglottis. 

 a, Base ; 6 h, Cuneiform cartilages; 

 c, Summit ; d d, Lateral borders. 



LARYNGEAL LIGAMENTS. 



The ligaments connected with the larynx are extrinsic and 

 intrinsic. The extrinsic ones are as follows : — 



Lateral Hyo-tliyroid. 

 Middle Hyo-thyroid. 



Hyo-epiglottidean, 

 Crico-trachealis. 



The lateral-hyo-thyroid pass from the superior border of the 

 thyroid cartilage to the heel process of the os hyoides. The 

 middle hyo-thyroid ligament is a broad membrane, filling up the 

 space between the anterior border of the thyroid cartilage and the 

 heels and body of the os hyoides. The hyo-epiglottidean ligament 

 is a band of yellow elastic tissue, running between the base of the 

 epiglottis and body of the os hyoides, covered by the hyo-epiglotti- 

 dean muscle. The crico-trachealis joins the cricoid cartilage to 

 the trachea. 



The intrinsic ligaments are : — 



Thyro-epiglottidean. I Crico-arytenoidean. 



Arytenoidean. I Crico-thyroidean. 



Thyro-arytenoidean. 



The thyro-epiglottidean ligament binds the base of the epi- 

 glottis to the superior border of the thyroid cartilage. The 

 arytenoidean ligament joins the two arytenoid cartilages together. 



