THE LAEYNX, LUNGS, VOCAL SACS. ETC. 



I. THE LARYNX. 



The larynx (Fig-. 202) is a short wide tube placed between 

 the posterior eornua of the hyoid, to which it is attached by 

 connective-tissue. The long axis of the tube lies in the median 

 line and almost horizontally, but the posterior end is on a slightly 

 lower level than Fig. 202. 



the anterior, when eo F ^ 



the animal is in 

 the natural sitting 

 position (Fig. 202). 

 The anterior end 

 of the larynx opens 

 into the mouth by 

 a longitudinal slit 

 (Fig. 179 L), and 

 is placed in a slight 

 depression caused 

 by the folding of 

 the mucous mem- 

 brane ; the poste- 

 rior end communi- 

 cates with the 

 cavities of the 

 lungs. 



The larynx is 



lined with mucous membrane, which is continuous, in front with 

 that of the mouth, behind with that of the lungs. The organ 

 has a skeleton of cartilage, and possesses special muscles, 



