DIGESTIVE SYSTEM 



311 



Pleura 



Pericardium 



Intestine 



Peritoneum 



Bladd 



Fig. 147. Diagram showing the position of the organs in the 

 body cavity which is divided by the diaphragm into thorax and 

 abdomen. 



Digestive glands. Connected with the alimentary 

 canal are a number of glands. The digestive juices 

 which act chemically upon the food are produced by 

 these glands. The salivary glands pour their secretion 

 into the mouth. The gastric glands open into the 

 stomach. The secretions from .three other glands, the 

 intestinal, the liver, and the pancreas, flow into the 

 intestine. 



