xii CONTENTS 



PAGE 



SECTION V. INTERNAL OR TISSUE RESPIRATION - 263 



Seats of oxidation - - 263 



Respiration of muscle - - - - 265 



Nature of the oxidative process - - 267 



SECTION VI. RELATION OF RESPIRATION TO THE NERVOUS 



SYSTEM - - 268 



The respiratory centre and its connections - 268 



Regulation of respiration through the vagus - 270 



Action of other afferent fibres on the respiration - - 274 



The chemical regulation of the respiration - - - 275 



Apncea - 277 



Automaticity of the respiratory centre - - 278 



Special modifications of the respiratory movements - 281 



SECTION VII. THE INFLUENCE OF RESPIRATION ON THE BLOOD- 

 PRESSURE - - 283 



SECTION VIII. THE EFFECTS OF BREATHING CONDENSED AND 



RAREFIED AIR - - 289 



SECTION IX. CUTANEOUS RESPIRATION ... 292 



CHAPTER V. 

 VOICE AND SPEECH. 



Voice ... ... 301 



Speech ... ... 306 



CHAPTER VI. 

 DIGESTION. 



SECTION I. PRELIMINARY ANATOMICAL AND CHEMICAL DATA - 312 



Anatomy of alimentary canal - 313 



SECTION II. MECHANICAL PHENOMENA OF DIGESTION - - 315 



Mastication - . V . - 315 



Deglutition - - 316 



Movements of stomach - - 320 



Movements of intestines - - 322 

 Influence of central nervous system on gastro-intestinal 



movements - ... 325 



Defsecation - ..... 326 



Vomiting - - ... 328 



SECTION III. CHEMISTRY OF THE DIGESTIVE JUICES FERMENTS 330 



Saliva .... 338 



Gastric juice - ... 343 



Antiseptic functions of gastric juice - 350 



