TABLE OF PHYSIOLOGICAL CONSTANTS. 



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 the body weighing 145 pounds: 109 pounds. 

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

 Amount of saliva secreted in 24 hours: about 3^ pounds. 

 Function of saliva: converts starch into maltose. 

 Active principle of saliva: ptyalin. 



Amount of gastric juice secreted in 24 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 3 to 5 hours. 

 Amount of intestinal juice secreted in 24 hours : about i pound. 



Function of intestinal juice: converts cane sugar into dextrose 



and levulose ; maltose into dextrose. 



Amount of pancreatic juice secreted in 24 hours : about i y* pounds. 

 Active principles of pancreatic juice: trypsin, amylopsin, and 

 steapsin. 



. Steapsin splits the neutral fats into fatty acids and 



glycerin. 



1 2. Trypsin converts albumin into peptone. 

 3. Amylopsin converts starch into maltose. 

 Amount of bile poured into the intestines daily: about 2^ pounds. 



1. Assists in the emulsification of fats. 



2. Stimulates the peristaltic movements. 

 Functions :J _ .... . - ,. , 



3. Prevents putrefactive changes in the food. 



4. Promotes the absorption of fat. 



Amount of blood in the body : about -^ of the body weight. 

 Size of red corpuscles : -^V o~ of an * ncn - 

 Size of white corpuscles : -%%-$$ of an inch. 

 Shape of red corpuscles: circular biconcave discs. 

 Shape of white corpuscles: globular. 



Number of red corpuscles in a cubic millimeter of blood (the cubic 

 ^-5- of an inch) : 5,000,000. 



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