652 



THE VOICE. 



[BOOK in. 



Quality. This depends on the number and character of the over- 

 tones accompanying any fundamental note sounded, and is deter- 

 mined by a variety of circumstances, chief among which is the 

 physical quality of the cords. 



The vocal cords, attached in front to the thyroid cartilage, end 

 behind in the processus vocales of the arytenoid cartilages. Hence 

 a distinction has been drawn between the rima vocalis, i.e. the 



FIG. 88. THE LARYNX AS SEEN BY MEANS OF THE LARYNGOSCOPE IN DIFFERENT 

 CONDITIONS OF THE GLOTTIS. (From Quain's Anatomy after Czermak.) 



A while singing a high note ; B in quiet breathing ; C during a deep inspiration. 

 The corresponding diagrammatic figures A', B', C', illustrate the changes in 

 position of the arytenoid cartilages, and the form of the rima vocalis and 

 rima respiratoria in the above three conditions. 



I the base of the tongue ; e the upper free part of the epiglottis ; e' the 

 tubercle or cushion of the epiglottis ; ph. part of the anterior wall of the 

 pharynx behind the larynx; w swelling in the aryteno-epiglottidean fold 

 caused by the cartilage of Wrisberg ; s swelling caused by the cartilage of 

 Santorini ; a the summit of the arytenoid cartilage ; cv the true vocal cords ; 

 cvs the false vocal cords ; tr the trachea with its rings j 6 the two bronchi at 

 their commencement. 



opening bounded laterally by the vocal cords, and the rima 

 respiratoria, or space between the arytenoid cartilages behind the 

 processus vocales; these names however are not free from ob- 

 jections. In quiet breathing (Fig. 88 ) the two form together a 

 V-shaped space, which, as we have seen (p. 325), in deep inspiration 



