VISCERA 15 



The Pylorus is that part of the stomach which 

 opens into the intestine. 



The part of the stomach lying to the left is 

 called the cardiac portion ; that to the right the 

 pyloric portion ; the anterior margin is the lesser 

 curvature ; the posterior margin is the greater 

 curvature. 



The stomach is lined with mucous niembrane, 

 which is thrown into folds at the cardiac end. 



3. The Small Intestine is the convoluted tube 

 which leaves the stomach at the pyloric end. The 

 U-shaped portion immediately succeeding the py- 

 lorus is the duodenum. The jejunum is the direct 

 continuation which runs a short distance to the 

 right. The remaining convoluted mass is the 

 ileum, which terminates at the junction with 

 the large intestine. The fold of the peritoneum 

 which suspends the intestines from the body wall 

 is the mesentery. Blood-vessels, nerves, and lym- 

 phatics pass to the intestine between its two lay- 

 ers. 



The mucous membrane which lines the small 

 intestine is raised into a number of closely-set fila- 

 ments, called villi. 



4. The Large Intestine is the remaining large and 

 less convoluted portion of the alimentary canal. 

 It passes forward, from the junction with the 

 ileum, as the ascending colon, across to the left as 

 the transverse colon, and backward as the descend- 

 ing colon, ending in a terminal portion called the 



