PHARYNX AND LARYNX. 



47 



e. The Chorda Tympani, the nerve of the sub- 

 maxillary, is also shown in this dissection. Coming 

 out from underneath the mandible and passing to- 

 ward the ventral mid-line will be seen the large 

 lingual nerve. Just at the point it comes into view 

 it gives off a minute branch, the chorda, which runs 



Fig. 3. — Diagram of the Sub-Maxillary Gland. 



to the duct and thence to the gland. The relations of 

 these parts is shown in Fig. 3. 



f. The Sub-lingual Gland lies along the outer 

 side of the duct of Wharton, and is crossed by the 

 Hngual nerve. It is a small narrow glandular body 

 which opens upon the floor of the mouth by several 

 small ducts. 



6. The Larynx. Remove the larynx and the hyoid 

 bone with its processes from the body for more care- 

 ful examination. The larynx consists of four princi- 

 pal cartilages, a. The thyroid, the largest and most 

 anterior; the sides or wings are widely open behind. 

 b. The cricoid, having somewhat the shape of a seal- 

 ring, being narrow on the ventral surface and ex- 

 panded dorsally. It is connected to the thyroid by 

 ligaments and muscles, c. The arytenoid cartilages are 



