QUESTIONS 285 



14. What is the acidity due to? What percentage of hydrochloric 

 acid is normally present in the gastric juice? 



15. What is the function of pepsin in the gastric secretion? 

 Rennin? 



16. Is the intestinal secretion acid or alkaline in reaction? 



17. Name the enzymes found in the pancreatic juice. 



18. Give briefly the function of the enzymes trypsin, amylopsin, 

 steapsin, as regards their action during intestinal digestion. 



19. Name the enzyme present in the intestinal juice and give its 

 function. 



20. What cells secrete the bile and how does it leave the liver?' 



21. Name the organ in which bile is stored. 



22. How does the bile reach the intestine from the liver and 

 gall-bladder? 



23. Give the physiologic functions of bile. 



24. Give the contents of the colon following intestinal digestion. 



25. Give the capacity of the infant's stomach at birth; two, four, 

 six, eight, ten, twelve, fourteen to eighteen weeks; five to six, seven 

 to eight, twelve to fourteen months. 



26. Describe the functions of the stomach during gastric digestion 

 in infants. 



27. In which portion of the alimentary canal is the nourishment 

 absorbed from during infant digestion? 



