128 



PHYSIOLOGY 



CHAP. 



papillae, much more numerous and smaller, are disseminated all 



FIG. 52. Semi - diagrammatic drawing of section of a fungi form papillae a, and four conical 

 papillae Z>, of mouse's tongue (Fusari and Panasci) ; c, taste-buds ; d, fibres of deep nerve 

 plexus ; e, group of nerve-cells ; /, terminal fusiform swellings. 



over the dorsal surface of the tongue, but are more numerous and 



FIG. 53. Semi-diagrammatic drawing of circumvallate papillae of mouse. (Fusari and Panasci.) 

 The taste-buds and sustentacular cells of different shapes are shown round the depression A ; 

 the different forms of nerve-endings in buds and epithelium are shown round depression B. 

 a, central nerve bundle ; 6, plexus of papilla ; c, plexjform nerve bundle running to serous 

 glands ; d, lateral nerve bundle cut across ; e, granules ; /, nerve-plexus of granules ; g, nerve- 

 cells ; h, i, sustentacular cells of taste-buds; I, m, peribulbar nerve networks; n, fibres of 

 buds dividing and ending in tufts ; o, inter-epithelial nerve-endings ; p, terminal fusiform 

 ramifications. 



run together at the tip and sides; the conical and filiform 



