INDEX 



267 



ELIMINATION of carbon dioxid, 

 160-164 



of nitrogen, 165-168 

 Endogenous metabolism, 156 

 Energy, animals as transformers 

 of, 176 



from various foods, 176-178 



of metabolism, 178 



of muscular contraction, 37, 38 



plants and, 20-22 



source of, for work, 187-191 



transformation of, 181-183 

 Enterokinase in intestinal juice, 



92 

 Enzyme action, energy change 



in, 35 



equilibrium, 33 



Enzymes, action of acids and al- 

 kalies upon, 34 



amylopsin, 91 



definition of, 32 



diastatic, 32, 67, 91 



erepsin, 94, 134 



gastric lipase, 87 



invertase, 94 



lactase, 94 



lipase (pancreatic), 92 



lipolytic, 87, 92 



maltase, 94 



pepsin, 86 



proteolytic, 86 



ptyalin, 67 



relation to temperature, 34 



rennin, 85 



steapsin, 92 



thrombin, 114 



trypsin, 92 

 Equilibrium in weight, 175 



nitrogen, 174 



Erepsin in intestinal juice, 94 

 Esophagus, peristalsis in, 66 

 Exogenous metabolism, 156 



Extractives, drawbacks of, in 



diet, 220, 221 



exciters of gastric secretion, 83 

 in diet, 26 



FASTING, carbohydrate in, 171, 



193 



fat in, 171 

 Fat, definition of, 25 



derived from carbohydrates 



and fats, 136, 142 

 distribution of, in body, 25, 136 

 in diet, 26 

 in plasma, 112 

 substituted for glycogen, 144 

 "Faulhorn experiment," 188 

 Feces as bearers of wastes, 168, 



169 



composition of, 102 

 Feeding and metabolism, 192 

 Fever, 203 



Fibrin in clotting, 113 

 Fletcherism, 210, 211 

 Food accessories in diet, 224 

 action of bacteria upon, 31 

 purpose of, 13, 135 

 Fuel value, definition of, 176 

 of carbohydrates, 177 

 of fats, 177 

 of hydrogen and carbon, 176, 



177 



of proteins, 177, 178 

 Fundus, definition of, 70 

 function of, 72 

 movements in, 72, 76 



GASTRIC digestion, 85 

 juice, 78-87 



acid of, 79, 80 



Spallanzani and, 78 

 lipase, 87 



