Chap. XV] 



SUMMARY 



305 



Stomach 

 Digestion 



o 



H 

 CO 



Gastric 

 juice 



Peristaltic action of stomach. 



Time required for stomach digestion about 5 hours. 



Secretion of gastric juice \ ^^^ ]^^' 



[ Chemical — • Secretin. 



Secreted by glands of stomach ( ^^P*^^- 



I Pyloric. 



About 15 pints in 24 hours. Pale yellow liquid 



Acid reaction due to free hydrochloric acid. 



r Pepsin. 

 Enzymes < Rennin. 



I Gastric lipase. 



Movements of small intestine ( Pen^^^l^ic. 



I Rhythmic segmentation. 



Secretion of pancreatic juice ( ^f^^^^.^^^)- 



I Chemical — secretin. 



Secreted by pancreas, discharged into small 



intestine during digestion. 



Pancreatic I Viscid fluid, alkaline reaction, 



juice 1 f Trypsin. 



Enzymes \ Diastase. 



I Lipase. 



Small 

 Intestine 



Succus 

 entericus 



Intestinal or Lieber- 

 kuhn's. 



2. Duodenal or Brun- 



Enzymes 



Bile 



Bacteria 



Secreted by glands 

 found in intes- 

 tines 



ner's. 



Yellowish fluid, alkaUne reaction. 

 f Erepsin. 

 I Inverting. 



' Secreted by liver, stored in gall-bladder, dis- 

 charged into small intestine during diges- 

 tion. 

 Golden brown or greenish liquid with alkaline 



reaction. 

 About 1 quart in 24 hours. 



f 1. Splits up neutral fats. 



2. Aids in absorption of fats. 



3. Antiseptic action on intestinal 

 Action <! contents. 



4. Excretes products of disinte- 

 gration of haemoglobin. 



, 5. Mild laxative. 

 f Decompose carbohydrates. 

 I Little or no effect on proteins. 



