26 



MANUAL FOR STABLE SERGEANTS. 



33. The large intestine is about 22 feet long and varies in 

 diameter. It consists of four parts, the csecum, great colon, small 

 colon, and rectum. 



34. The mucous membrane of the intestines is covered with 

 minute projections called villi, which absorb the nutriment of the 



Sacc.us avcus 

 {left extrcmily) 



FuiuhiH 



gland 

 region 



Dirniiciihim duodcni 

 ylorus 



Pyloric gland ngron 



Fig. 13.— Frontal section of stomach and first part of duodenum of horse. C, Cardiac 

 orifice. Photograph of specimen fixed in situ. (From Sisson's Anatomy of tho 

 Domestic Animals; copyright, W. B. Saunders Co.) 



food after it has been prepared bj^ digestion. _ The mucous mem- 

 brane also contains small glands which pour their secretions into the 

 intestines. These glands and villi are more numerous in the small 

 intestine than in the large. 



