i8o 



HISTOLOGY. 



Secondary papillae. 

 Vallate papilla. 



Taste bud. 



Tuica propria 



Groove. 



Orifice 

 of a 



serous Small 

 gland. papilla. 



Epithelium. 



Tunica 

 propria 



Striated , 

 muscle. 



Muscle fibers in cross 

 and longitudinal section. 



Nerve with Fascia Mucous 



small ganglion, linguae. gland 



Vein. 



FIG. 202. VERTICAL SECTION OF A HUMAN VALLATE PAPILLA. X 25. 



They are sometimes forked or branched below and at the free surface they 



may end in a short conical pro- 

 cess. The peripheral halves of 

 the cells in a taste bud converge 

 somewhat like the segments of 

 a melon, so that their ends are 

 brought together in a small 

 area. This area is at the bot- 

 tom of a little pore or short 

 canal found among the outer- 

 most flat cells of the epithelium. 

 Sometimes it is bounded by 

 the supporting cells. The 

 taste pore opens freely to the 

 surface, but in oblique sections 

 it may appear bridged as in 

 Fig. 203. Besides the support- 

 ing cells which are found at 



the periphery of the bud and which terminate around or beneath the pore, 



Taste pore. 



Supporting ^-- 

 cells. 



Taste cells. --.E 



Va 



Stratified _. JBV| 

 epithelium. """ " jyl. 



Tunica 

 propria 



FIG. 203. FROM A VERTICAL SECTION OF A HUMAN 

 FOLIATE PAPILLA. X 330. 



