CONTENTS xvii 



CHAPTER XXVIII 



MOVEMENTS OF THE ALIMENTARY CANAL 



Mastication. Hygiene of mouth. Deglutition. Movements of stom- 

 ach. Control of pyloric sphincter. Importance of stomach. Movements 

 of small intestine. Extrinsic control of stomach and intestinal movements. 

 Movements of large intestine. Importance of roughage 469 



CHAPTER XXIX 



THE DIGESTIVE SECRETIONS AND THEIR CONTROL 



Organs of secretion. Forms of glands. Secretory process. Nervous 

 control of secretory process. Hormone control of gland activity. Control 

 of salivary secretion. Control of gastric secretion. Nature of chemical 

 stimulus to gastric secretion. Control of pancreatic secretion. Control 

 of bile flow. Control of succus entericus. Digestive history of a meal. 

 Maintenance of good digestion 480 



CHAPTER XXX 



THE ABSORPTION AND USE OF FOODS 



General statement. Absorption from stomach. Absorption in small 

 intestine. Nature of absorptive process. Channels of absorption. Ab- 

 sorption and storage of carbohydrates. Glycogen in muscles. Relation 

 of kidney to concentration of sugar in blood. Alimentary glycosuria. 

 Emotional glycosuria. Diabetes mellitus. Glycosuria from increased per- 

 meability of kidney cells. Absorption of proteins. Absorption of fats. 

 Absorption from large intestine. Food requirement of Body. Protein re- 

 quirement of Body. Maintenance proteins and growth proteins. Fuel 

 protein. Liberation of energy in Body. Basal metabolism. Metabolism 

 of muscular work. Relative food values of proteins, carbohydrates, and 

 fats. Specific dynamic action of proteins. Nutritive value of albuminoids. 

 Special metabolism of fats. Principles of dietetics. Maintenance of con- 

 stant weight. Water equilibrium. Nitrogen equilibrium. Carbon equi- 

 librium. Influence of thyroid hormone on metabolism. Treatment for 

 obesity. Source of Body fat 491 



CHAPTER XXXI 



EXCRETION AND THE EXCRETORY ORGANS 



Exogenous and endogenous excreta. Channels of excretion. Liver as an 

 excretory organ. General arrangement of urinary organs. Structure of 

 kidney. Blood-flow through kidney. Urine. Secretory action of different 

 parts of tubule. Relation of blood-flow to secretion of urine. Skin. Hairs. 

 Nails. Glands of skin. Skin secretions. Factors in sweat secretion. Se- 

 baceous secretion. Bathing 516 



