412 



ANATOMY FOR NURSES 



[Chap. XX 



(2) Fungiform papilla' are the next in size, and are so named 

 because they resemble fungi in shape. They are found principally 

 on the tip and sides of the tongue. Each fungiform papilla? con- 

 tains a loop of capillaries and a nerve-fibre derived from the glosso- 

 pharyngeal nerve. 



Fig. 191. — The Upper Surface of tuk i onhue. 1, 2, circumvallate papillae ; 

 3, fungiform papilla? ; 4, filiform papillae ; 6, mucous glands. (Sappey.) 



(3) Filiform papillae are the smallest and most numerous. 

 They are found all over the tongue, except at the root, and bear 

 on their free surface delicate hair-like processes which seem to be 

 specially connected with the sense of touch, which is very highly 

 developed on the tip of the tongue. 



Nerve supply of the tongue. — The nerve-fibres which terminate 

 in the taste buds are : (1) filaments of the lingual nerve, which is a 



