PHYSIOLOGIC CONSTANTS 303 



Has affinity any power in its production? 



What is regarded as animal heat? 



How is heat generated in the body? 



What takes place when oxygen is combined with carbon? 



Where does the blood take on its dark color? 



What two changes take place in the blood in one revolution of the 

 same? 



With these changes, what supply is provided to the system? 



Why does the system require rest? - 



What takes place in the system while we sleep? 



What is produced when free perspiration is brought about? 



Should there be a blocking-up of the perspiration? What would 

 follow? 



When poison is taken into the system, why is the skin one of the im- 

 portant routes of elimination? 



If the poison remains in the system for a great length of time, what is 

 the best means to eliminate it? 



Is the temperature of the body influenced by perspiration? 



What are required for the maintenance of good health? 



TABLE OF PHYSIOLOGIC CONSTANTS. (Brubaker.) 



Mean height of male: 5 feet 6| inches; of female: 5 feet 2 inches. 



Mean weight of male: 145 pounds; of female: 121 pounds. 



Number of chemic elements in the human body: From 16 to 18. 



Number of proximate principles in the human body: About 100. 



Amount of water in a body weighing 145 pounds: 108 pounds. 



Amount of solids in a body weighing 145 pounds: 36 pounds. 



Amount of saliva secreted in twenty-four hours: About 3^ pounds. 



Function of saliva: Converts starch into maltose. 



Active principle of saliva: Ptyalin. 



Amount of gastric juice secreted in twenty-four hours: From 8 to 14 pounds. 



Function of gastric juice: Converts albumin into peptone. 



Active principles of gastric juice: Pepsin and hydrochloric acid. 



Duration of digestion: From three to five hours. 



Amount of intestinal juice secreted in twenty-four hours: About i pound. 



Function of intestinal juice: Converts starch into maltose. 



Amount of pancreatic juice secreted in twenty-four hours: About il pounds. 



Active principles of pancreatic juice: Trypsin, amylopsin, and steapsin. 



Functions of pancreatic juice: i. Emulsifies fats. 2. Converts albumin 



into peptone. 3. Converts starch into maltose. 

 Amount of bile poured into the intestines daily: About 2\ pounds. 



