MOUTH. 



509 



surface. The pai^illae circamv^allatae alone have a relation to 

 the sense of taste. The tongue is supported by the hyoid bone 

 and by a cartilaginous rod, which represgnts the os interglossum. 

 The anterior cornua of the hyoid are attached by ligament to 



6 



Fic. 267. — Entrance to the digestive apparatus and the respiratory ors;ans of the cat (after 

 C. Heider). a head with exposed salivary glands. P parotid; M sub-maxillary; Sii 

 sub-lingu.al. b Longitudinal sertion through the head and thorax ; the re.«piratory organs 

 are seen from the side, c Longitudinal section through the larynx (L) and the first part 

 of the trachea (Tr.). B thymus ; C corpus callosum ; Cb cerebellum; Cg corpora quad- 

 rigemina ; D Diaphragm ; E epiglottis ; H cerebral hemispheres ; Hy hypophysis ; L 

 larynx ; ^1/ mouth ; N nasal aperture ; Nm turbinal bones ; Oe oesopliagus ; P lung ; 

 Pa velum palati ; R spinal cord ; S vocal cord ; St sternum ; T thyroid ; Tr trachea : 

 Tu opening of eustachian tube into the pharynx ; W vertebral column ; Z tongue ; Zb 

 hyoid. 



the styloid processes of the temporal bone or its equivalent, the 

 posterior bear the larynx. Beneath the tongue there is some- 

 times (most developed in the Insectivora) a single or double 

 projection, which is termed the sublingua. The sides of the 

 buccal cavity are soft and fleshy, and are not unfrequently in 



