ORGANS OF RESPIRATION. 



233 



these cartilages, regulating the vocal cords and 

 modulating the voice. 



The mucous membrane of the larynx is continuous 



Fig. 179. Vertical section through the mucous membrane of the human 

 larynx (Bohm and Davidoff). 



with that of the mouth and particularly sensitive 

 about the upper part above the glottis. This mu- 



