402 



THE HUMAN BODY 



forwards. Each is an elevation of the mucous membrane, covered 

 by epithelium, and surrounded by a trench. On the sides of these 

 papilla?, embedded in the epithelium, are many small oval bodies 

 richly supplied with nerves and supposed to be concerned in the 



FIG. 128. The upper surface of the tongue with part of the pillars of the fauces 

 and the tonsils. 1, 2, circumvallate papillae; 3, fungiform papillae; 4, filiform 

 papillae; 6, mucous glands; 7, tonsils; 8, tip of epiglottis. 



sense of taste, and hence called the taste-buds (Chap. XIV) . The 

 fungiform papillce, 3, are rounded elevations attached by somewhat 

 narrowed stalks, and found all over the middle and fore part of the 

 upper surface of the tongue. They are easily recognized on the 

 living tongue by their bright red color. The filiform papillce, 4, 



