viii ESSENTIALS OF PHYSIOLOGY. 



CHAP. PAGE 



IX. THE RESPIRATORY SYSTEM 244 



Section!. Respiratory Movements . . . 244 



,, 2. Chemistry of Respiration ... . 250 



,, 3. Regulation of Respiratory Movements .... 263 



,, 4. Tissue Respiration ........ 278 



,, 5. Changes in Character of the Air Breathed . . . 281 



, , 6. Effect of Respiratory Movements on the Circulation . 283 

 ,, 7. Muscular Exercise . . . . . . .285 



X. THE DIGESTIVE SYSTEM . . . . . . . . .288 



Section 1. The Nature of Digestion 288 



,, 2. Changes in the Food in the Mouth 291 



3. Gastric Digestion 301 



,, 4. Intestinal Digestion . . . . . . .312 



,, 5. Absorption . . . . . . . . 328 



6. Large Intestine 332 



XI. METABOLISM 338 



Section 1. Methods of Investigation ...... 338 



,, 2. Metabolism of Fat ........ 344 



,, 3. Metabolism of Carbohydrate 348 



,, 4. Metabolism of Protein . . . . . . . 354 



5. Total Metabolism ... .... 360 



6. The Liver 363 



XII. SKIN AND ANIMAL HEAT . 365 



XIII. FOOD AND DIET 371 



XIV. THE URINARY SYSTEM . . .380 



Section 1. Structure of the Kidney and Composition of Urine . . 380 



,, 2. Formation of Urine . . . . . . ' . . 389 



,, 3. Micturition 398 



XV. DUCTLESS GLANDS 400 



XVI. REPRODUCTION 410 



INDEX . . 418 



