CONTENTS xi 



RESPIRATION (continued) PAGE 



Respiration of muscle - - 261 



Nature of the oxidative process 264 



Influence of respiration on blood-pressure 265 



Effects of breathing condensed and rarefied air - 272 



Cutaneous respiration - - 275 



Voice and speech - 276 



CHAPTER IV. 



DIGESTION - 296 



Mechanical phenomena of digestion - - 300 



Deglutition - 301 



Movements of stomach and intestines - - 304 

 Influence of central nervous system on gastro-intestinal 



movements - - 309 



Defalcation - 3 10 



Vomiting - 312 



Chemical phenomena of digestion - 314 



Ferments - 314 



Chemistry of the digestive juices - 319 



Saliva - - 3*9 



Gastric juice - 322 



Antiseptic function of the gastric juice - - 328 



Pancreatic juice - - 330 



Bile - 334 



Succus entericus - - 34 1 



Secretion of the digestive juices - 344 



Changes in pancreas and parotid during secretion 346 



Changes in gastric glands during secretion - 347 



Changes in mucous glands during secretion - 352 



Mode of formation of the digestive juices - 354 



Why the stomach does not digest itself - - 359 



Influence of the nervous system on the salivary 



glands - 362 

 Reflex secretion of saliva - 36) 

 Influence of the nervous system on the gastric glands - 372 

 Influence of the nervous system on the pancreas - 378 

 Secretin - - 379 

 Influence of the nervous system on the secretion of bile 383 

 Influence of the nervous system on the secretion of intes- 

 tinal juice - 386 

 Action of drugs on digestive secretions - - 387 

 Secretion of the digestive juices (summary) - - 388 

 Digestion as a whole - - 389 

 Reaction of intestinal contents - - 393 

 Bacterial digestion - 395 

 Faeces - - 396 



