THE DIGESTIVE SYSTEM i I 



intestine lies in tlie upper part of tiie left tiauk, l_)ut is changeable 

 in situation, depending on the degree of fulness. About (J inches 

 from the stomach the common opening of the Ijile antl pancreatic 

 ducts pierces the intestine at the tiiverticulum duodeni (Fig, 18). 

 From the free surface of the mucous lining numerous small pro- 

 jections, termed villi, can be seen when a piece of the membrane 



pxtremilij) 



I'll) UK jlau i ) ' 1/ on 



Fig. IS. — Frontal .section of stomach and fir.st part of duodenum. The 

 marked difference in the mucous hning of the various gland regions is clearlj' 

 shown. (Sis.son, Anatomy' of Domestic Animals.) 



is placed in water (Fig. 19). Each villus contains a central lymph- 

 vessel or lacteal, by which certain food nutrients are absorbed from 

 the intestine (Fig. 20). 



The large intestine is divided into the cecum, large colon, small 

 colon, and rectum. It is aljout 25 feet long and nearly twice the 

 diameter of the small intestine. For the most part it is sacculated. 



The cecum has a capacity of 7 gallons and is about 3 feet long. 



