TASTE-BUDS. 



papilla foliata (fig. 161)). Taste-buds are also found over the anterior surface of 

 the soft palate, and are very numerous over the posterior surface of the epiglottis. 



Fig. lb'8. VERTICAL SECTION OF CIRCUMVALLATE PAPILLA, FROM THE CALF. (Engelnmnn. ) -^ 



A, papilla ; B, vallum ; >/, bundles of nerve-fibres entering papilla ; d, duct of a serous gland 

 opening into fossa around papilla. 



According to W. Krause they follow the distribution of the glosso-pharyngeal 

 nerve. 



Flask-shaped organs similar to taste-buds were discovered by Leydig in fishes in 



Fig. 169. VIEW FROM ABOVE OF THE RABBIT'S TONGUE SHOWING THE PAPILLA FOLIATE. (E. A. S.) 



certain parts of the skin, and they also occur in the mucous membrane of the mouth 

 and throat in those animals. In amphibia the taste-organs take the form of patches 



Fig. 170. VERTICAL SECTION OF A FOLIATE PAPILLA OF THE RABBIT, PASSING ACROSS THE FOLIA. 



(Ranvier. ) 



p, central lamina of folium ; v, vein ; p', lateral lamina of folium ; g, taste-bud ; w, sections of 

 nerve-bundles ; a, serous gland. 



of modified epithelium-cells set on the surface of certain papillse of the tongue. The 

 structure of the taste-buds is most easily studied in sections of the papilla foliata of 

 the rabbit (figs. 170, 171). 



