32 DISEASES OF THE HOG. 



CHAPTER III. 

 STOMACH OF THE PIO. 



Fig 139, Stomach of the Pig Inflated.— A. Car- 

 diac portion. B. Its accessory cul-de-sac. C. 

 Pyloric portion. D. Lesser curvature. E. Great- 

 er curvature. F. Oesophagus. G. Pyloric orifice. 



The stomach of the pig is simple, although it 

 takes on somewhat of a compound form, and to a 

 certain extent performs the func^on of carnivora 

 and ruminants. It consists of two portions: car- 

 diac and pyloric; the latter is the smaller, but the 

 divisions are marked externally by a much more 

 distinct contraction. At the upper and left portion 

 of the cardiac half is a small cul-de-sac. The 

 oesophagus is infundibuliform in its termination. 

 The mucous membrane, for the most part villous 

 (velvety) in its structure, forms two folds, which 

 extend from the cardiac towards the pyloric ori- 

 fice, representing undeveloped oesophageal pil- 

 lars and canal. The gastric juice of the hog con- 

 tains the same ferments as are found in the secre- 

 tions of other mammals. The secretions from dif- 

 ferent portions of the stomach differ; that obtained 

 from the greater curvature contains more mucin, 

 more acid and more ferment than that from the 



