SECT. 131.] 



THE TONGUE. 



V5 



mincnccs, the well-known l/ngital and taste-papilla?, the general 

 form and arrangement of which are described in every anatomical 

 work. Besides these prominent and obvious papillae, there exist 

 over all the gustatory region of the tongue other smaller ones, 

 which are completely buried in the epithelium, and which entirely 

 agree with those of the non-gustatory regions of the organ. 



In its intimate structure, the part of the mucous membrane of 

 the tongue which is destitute of prominent papillae, agrees in all 

 respects with that of the oral cavity generally, which has been 

 already described. 



With regard to the papillae, the papilla filiformes or conicce (fig. 



120) are conical, firm projections of the mucous membrane, pro- 

 Fig. 113. 



JnGRlllllllMMA 



cu I A c a. 



Two papilla; filiformes of man, one with its epithelium magnified 35 times. After Todd 

 and . J,, the papilla themselves; a v. arterial and venous vessels of one papilla, 



together with the capillary loops, which, however ought to enter the secondary papillae. 



vided with numerous elastic fibrils, and beset at the extremities 

 only, or upon their entire surface, with a certain number (5 to 20) 

 of smaller papillae, o'l"' to 0-14'" in length. The papilla is 

 entirely covered by a tolerable thick coating of epithelium, which 



t 2 



