1072 



THE VOICE. 



[BOOK 



the corresponding ventricle of the larynx and reaching to the 

 side of the laryngeal aperture, may be seen the ventricular band 

 (c.v.s.). By their white colour the vocal cords present a strong 

 contrast to the rest of the larynx. 



ar.e.f 



Tr 



FIG. 184. FIG. 185. 



FIG. 184. DIAGRAM or THE SUPERIOR APERTURE OF THE LARYNX. 



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



e. the epiglottis with e' its cushion, ar.e.f. the ary-epiglottic fold, on which 

 are seen the swellings or "capitula" caused (IF) by the cartilage of Wrisberg 

 and () 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 depres- 

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

 laryngeal or pyriform recess. 



FIG. 185. DIAGRAM OF THE LARYNX IN VERTICAL SECTION. 



e. the epiglottis. I. 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 car- 

 tilage of Santorini ; from these eminences folds descend towards the processus 

 vocalis of the arytenoid. c.v. the true, and c.v.s. the false vocal cord or " ventri- 

 cular 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. 



