I30 



ELEMENTS OF MAMMALIAN ANATOMY 



very numerous at the root; the conical, most numerous and 

 thickly set over the entire dorsal aspect; and the fungiform, 



which are blunt and located 

 more thickly on the sides and 

 near the tip of the tongue 

 (Fig. 62). 



The Teeth.^ During the 

 first year the cat develops 

 twenty-six teeth, known as 

 the deciduous or temporary 

 set, as they are later replaced 

 by a permanent set. The 

 three parts of a tooth are the 

 crown, neck, and fang (Fig. 

 64). The crown may be di- 

 vided into several portions 

 called cusps. A tooth split 

 longitudinally presents the fol- 

 lowing four features (Fig. 63) : 

 The enamel, a hard glistening 

 substance covering the entire 

 crown of the tooth down to 

 the neck; the cement, a bony 

 substance investing the fang; 

 the dentine, forming the interior 



at, Arytenoia cartuage; aj, anrenor i •. ,• r a-U 4-^^4^U . ^»,J 



pillar of the fauces; ... crico-epiglottic hard portlOU of the tOOth; and 



ligament; cd, true vocal cords; cv, the /?w//? cai'//v, Containing in the 



vallate papilla; ep, epiglottis; Jl, flat ' 



papilla; fg, fungiform papilla; fr, rCCCUt State the ncrVC- and 



filiform papilla; g^ glottis; hy epiphyai bioQ^-vessels. The enamel con- 



bone cut oii; ;, false vocal cord; ce, 



lumen of the esophagus, which is cut sistS mOStly of the phosphatC of 



off just as it opens into the pharynx; x^ • ^^i • i.* v, 



pf, posterior pillar of the fauces; tn, hme. It IS the COVCrmg whlch 



^o"s^i- when broken permits the tooth 



to decay. 

 In an adult cat there are in each half of the upper jaw three 

 incisors, one canine, three premolars, and one molar (Fig. 64). 



THE 



Fig. 62. — Dorsal Aspect of 

 Tongue and Larynx. 

 at. Arytenoid cartilage; af, anterior 



