xii CONTENTS 



l-AGE 



SECTION V. INTERNAL OR TISSUE RESPIRATION - 265 



Seats of oxidation - - 265 



Passage of oxygen from the blood into the tissues - - 266 



Respiration of muscle - - 269 



Nature of the oxidative process - 271 



Passage of carbon dioxide from the tissues into the blood - 272 



SECTION VI. RELATION OF RESPIRATION TO THE NERVOUS 



SYSTEM - 274 



The respiratory centre and its connections - - - 274 



Regulation of respiration through the vagus - . - 276 



Action of other afferent fibres on the respiration - - 280 



The chemical regulation of the respiration - 281 



Apncea - - - 283 



Automaticity of the respiratory centre - 284 



Special modifications of the respiratory movements - - 287 



SECTION VII. THE INFLUENCE OF RESPIRATION ON THE BLOOD- 

 PRESSURE - - 289 



SECTION VIII. THE EFFECTS OF BREATHING CONDENSED AND 



RAREFIED AIR ... 295 



SECTION IX. CUTANEOUS RESPIRATION - ... 299 



CHAPTER V. 

 VOICE AND SPEECH. 



Voice - - - - 307 



Speech - ... 312 



CHAPTER VI. 

 DIGESTION. 



SECTION I. PRELIMINARY ANATOMICAL AND CHEMICAL DATA - 318 



Anatomy of alimentary canal r - 319 



SECTION II. MECHANICAL PHENOMENA OF DIGF.STION - - 321 



Mastication ... - - 321 



Deglutition - ... . 322 



Movements of stomach - - - - - 326 



Movements of intestines - 328- 

 Influence of central nervous system on gastro-intestinal 



movements - 331 



Defcecation - - 332 



Vomiting - 334 



SECTION III. CHEMISTRY OF THE DIGESTIVE JUICES FERMENTS 336 



Saliva - - 344 



Gastric juice - ... ^^ 



Antiseptic functions of gastric juice - - ^556 



