310 



THE VOICE. 



[BOOK in. 



with that of the vocal cords and the rest of the lining of the 

 larynx. The two vocal cords form we have said the edges of the 

 laryngeal slit called the glottis or rima glottidis. But this is true 



FIG. 182. 



FIG. 183. 



FIG. 182. DIAGRAM OF THE SUPERIOR APERTURE OF THE LARYNX. 



The oesophagus and pharynx are supposed to be laid open from behind. 



the ary-epiglottic fold, on which 

 the cartilage of Wrisberg 



e. the epiglottis with e' its cushion, ar. e. f. 



are seen the swellings or "capitula" caused (W] by 



and (S) by the cartilage of Santorini. i. the notch or incisura in the mucous 



fold uniting transversely the two arytenoid cartilages. 



1. (placed in the middle line of the base of the tongue) the median and (2) the 

 lateral glosso-epiglottic folds, the latter forming the boundary of the depression 

 (3) called the vallecula. 4. the pharyngo-epiglottic fold. 5. the pharyngo- 

 laryngeal or pyriform recess. 



FIG. 183. DIAGRAM OF THE LARYNX IN VERTICAL SECTION. 



f. The epiglottis. /. The base of the tongue. Hy. Hyoid bone. Th. Thyroid 

 cartilage ; Cri. Cricoid cartilage ; Tr. Tracheal cartilage ; all cut across. 



W. the swelling due to the cartilage of Wrisberg and S. that due to the cartilage of 

 Santorini ; from these eminences folds descend towards the processus vocalis 

 of the arytenoid. c.v. the true, and c.vs. the false vocal cord or "ventricular 

 band," with the mouth of the ventricle of the larynx v. between them, m.a.t. 

 the transverse arytenoid muscle cut across. P is placed in the cavity of the 

 pharynx. 



