7 6 



THE HUMAN BODY. 



The lips form the anterior wall of the mouth, and are com- 

 posed principally of the orbicular muscle of the lips, to whose 



LLVEILLt DEL. 



C. LAPLANTE 



Fig. 22. Section in the median line through the inferior portion of the nasal 



fossae, the mouth, pharynx, larynx, oesophagus, and trachea. 



A. Mouth. H. Superior vocal chord. 



B. Soft palate. I. Inferior vocal chord. 



C. Tongue. K. Ventricle of the larynx. 



D. Tonsil. L. Larynx. 



E. Epiglottis. M. N. Trachea or windpipe. 



F. Thyroid cartilage. O. Pharynx, before which is seen the 



G. Arytenoid cartilage. cricoid cartilage. 



concentric fibres are attached nearly all the muscles of the 

 face ; a very thick skin intimately united with the orbicular 



