I2O EQUINE ANATOMY. 



VISCERAL ANATOMY. 

 DIGESTIVE SYSTEM. 



The digestive system is that part in which the great processes 

 of digestion and absorption take place, as well as the expulsion of 

 the residue after the latter. 



The parts included are named from before, backward, the 

 mouth, pharynx and oesophagus, that carryt he food to the abdom- 

 inal organs, the stomach and intestines. 



The annexed organs are the salivary glands to the mouth, the 

 liver and pancreas to the intestines. 



THE MOUTH. 



The mouth is a cavity between the two jaws, and having an 

 anterior opening between the lips and a posterior, the soft palate 

 separating it from the pharynx. On the sides are the cheeks; 

 below, the tongue. 



Tongue. 



This is a flattened muscular organ, elongated antero-posteriorly 

 and fixed to the hyoid and inferior maxilla. It presents calyci- 

 jorm papilla on the dorsum near the base, arranged in a V shape. 

 At the apex of this are two depressions, the foramina caca. Fili- 

 form papilla at the middle of dorsum of tongue. Fungiform 

 papilla, club-shaped, on posterior J of dorsum. A fibrous cord 

 (the cartilage of the tongue), 3 or 4 inches long, under the mucous 

 membrane. 



Muscles. 



Intrinsic, of vertical, longitudinal and transverse fibres. Ex- 

 trinsic, see stylo-glossus, hyo-glossus, genio-glossus and hyo- 

 glossus minimus. 



Action. See Deglutition. 



Nerves. Lingual, ninth and twelfth. 



Blood Supply. Lingual and sublingual. 



Palate. 



See Muscles. 



Blood Supply. Ascending pharyngeal and internal maxillary. 

 Nerves. From superior maxillary and MeckePs ganglion of the 

 fifth. 



