THE LARYNX. 



477 



omy of the larynx, before considering its physiology in con- 

 nection with voice and speech. 



The principal parts entering into the formation of the larynx 

 (Figs. 169 and 170) are (t) the thyroid cartilage; (c) the 



FIG. 169. 



Outline showing the general form of the larynx, trachea, and bronchi as seen from 

 behind. %. h, great cornu of the hyoid bone ; t, superior, and t', the inferior cornu 

 of the thyroid cartilage ; e, the epiglottis ; a, points to the back of both the arytenoid 

 cartilages, which are surmounted by the cornicula ; c, the middle ridge on the back 

 of the cricoid cartilage ; tr, the posterior membranous part of the trachea ; b, b', 

 right and left bronchi. 



