1452 



THE VOICE. 



L 



[BOOK in. 



ph pv 



FIG. 185. DIAGRAM OF A LAEYNGOSCOPIC VIEW OF THE LARYNX (magnified twice). 



L. the base of the tongue, e. the epiglottis, seen foreshortened with e' its cushion. 

 ar.ep.f. the ary-epiglottic folds. W. the Capitulum Wrisbergi, S. Capitulum 

 Santorini; the mucous membrane between the arytenoids is stretched straight, 

 the notch being merely indicated, c.v. vocal cords, c.v.s. ventricular bands, 

 v. L the opening into the ventricle of the larynx seen between them. The 

 former, bounding the widely open glottis of more or less triangular form, 

 through which a view of the trachea (Tr.) is obtained are seen to end in the 

 processus vocales (p.v.}. 



On each side of the larynx is seen s.p. the pyriform recess, ph. the hind wall of 

 the pharynx. Lf. the median glosso-epiglottic fold. 



especially if a high note is being given (Fig. 186 A) the two 

 cartilages of Santorini are in close apposition, and the mucous 

 membrane between is folded up. If no voice is being uttered and 

 especially if a deep inspiration be taken (Fig. 186 B and C), the 

 cartilages of Santorini are far apart and the mucous membrane 

 between them appears as a ridge completing at the hind part the 

 rim of the aperture to the larynx ; there may also be seen on each 

 side lying immediately to the median side of the prominence of the 

 cartilage of Santorini a shallower prominence due to the top of the 

 arytenoid itself, shewn at a in Fig. 186 B. Between the two 

 phases of complete apposition and of the widest separation of the 

 tubercles of Santorini, intermediate phases may from time to time 

 be seen,, such as those shewn in Fig. 185, Fig. 186 B. 



These several structures define the superior aperture of the 

 larynx which in the laryngoscopic view, owing to the fore-shorten- 

 ing, is no longer seen as a slanting orifice with a long fore and aft 

 diameter but appears as a rhomboidal space with the transverse 

 diameter generally the longer one. If no voice is being uttered, and 

 the breathing be gentle and quiet, the glottis may be seen within 

 this aperture as a slit, more or less in the form of an elongated 



