326 



THE TONGUE. 



is an elevated line with a fimbriated margin directed outwards, which 

 extends to the tip. The ducts of the right and left submaxillary glands 

 end by papillary orifices placed close together, one on each side of the 

 frtenum ; and jfurther back, between the sides of the tongue and the 



Fitr. 226, 



Fig. 22(5. — Papillau Surface of the Tongue, with the Fauces and Tonsils (from 



Sappey). 



1, 2, cii'cumvallate papilire ; in front of 2, the foramen crecum ; 3, fungiform papillaj ; 

 4, filiform and conical papillfe ; 5, transverse and oblique ranges ; 6, mucons glands at 

 the base of the tongue and in the fauces ; 7, tonsils ; 8, part of the epiglottis ; 9, median 

 glosso-epiglottidean fold or frsenum epiglottidis. 



lower jaw, are found the orifices of the several ducts belonging to the 

 sublingual glands. 



The iqiper surface or dormm of the tongue (fig. 226), is convex in its 

 general outline, and is marked along the middle for nearly its whole 

 length by a slight furrow called the raphe, which indicates its bilateral 

 symmetry. A])out half an inch from the base of the tongue, the raphe 



