242 ANATOMY AND PHYSIOLOGY FOR NURSES 



tion of digestion. The practice of diluting the food with 

 large quantities of water while eating is injurious, for 

 drinking at such times prevents the flow of saliva into the 

 mouth that would otherwise take place. 



FIG. 124. Excretory ducts of the pancreas : A, Pancreas, with a, its 

 head; B, duodenum; C, jejunum; D, gall-bladder, i, main pancreatic 

 duct of Wirsung ; 2, accessory duct with 2', its opening upon the postero- 

 internal wall of the duodenum; 3, ampulla of Vater; 4, common bile-duct; 

 5, cystic duct; 6, hepatic duct; 7, aorta; 8, superior mesenteric vessels; 9, 

 celiac axis with its three branches (Testut). 



The salivary duCt opens into the mouth opposite the 

 second molar tooth in the upper jaw. This is the gland 

 that is affected in the disease known as mumps (epidemic 

 parotitis). 



