232 



THE PANCREAS. 



Pancreatic Juice. The most important changes which the 

 food undergoes in the process of intestinal digestion are those 

 which are due to the action of the pancreatic juice. This is the 



Alveolus. 



Intermedi- 

 ary duct. 



Centro-acinal - 

 cell. 



Intermediary - 

 duct. 



Intralobular - 

 duct. 



FIG. 129. From section through human pancreas : X about 200 (sublimate) (Bohm 



and Davidoff). 



product of the pancreas, and reaches the intestine by means of 

 the pancreatic duct which, together with the common bile-duct, 

 opens into the duodenum about 8 to 10 cm. below the pylorus. 



Connective 

 tissue. 



Centro-acinal 

 cell. 



Secretory cell. 



Intermediate 

 duct. 



FlG. 130. Scheme showing relation of three adjoining alveoli to excretory duct, 

 illustrating origin of centro-acinal cells (Bohm and Davidoff). 



Quantity of Pancreatic Juice. The amount of this fluid secreted 

 daily in the human being is not known, but it has been found that 

 in the dog it is 2.5 grams per kilo of body-weight. This would 

 give in a man weighing 70 kilos, 175 grams daily. 



