CONTENTS. xi 



PAGE 



Sec. 5. Changes in the calibre of the minute arteries. Vaso-motor actions . 197 

 Vaso-motor Nerves, p. 139. Vase-motor Centres, p. 212. The 

 effects of local vascular constriction or dilation, p. 216. 



Sec. 6. Changes in tJie Capillary Districts 219 



Sec. 7. Changes in the Quantity of Blood 224 



Sec. 8. The Mutual Relations and the Co-ordination of the Vascular Factors 227 



BOOK II. 



THE TISSUES OF CHEMICAL ACTION WITH THEIR RESPECTIVE 

 MECHANISMS. NUTRITION. 



CHAPTER I. 

 THE TISSUES AND MECHANISMS OF DIGESTION, pp. 233 311. 



Sec. 1. The Properties of the Digestive Juices 234 



Saliva, p. 234. Gastric juice, p. 239. Bile, p. 247. Pancreatic 

 juice, p. 250. Succus entericns, p. 255. 



Sec. 2. The act of secretion in the case of the Digestive Juices and the Nervous 



Mechanisms which regulate it 256 



Sec. 3. The Muscular MecJianisms of Digestion 281 



Mastication, p. 281. Deglutition, p. 282. Movements of the 

 O3sophagus, p. 284. Movements of the stomach, p. 285. Move- 

 ments of the small intestine, p. 286. Movements of the large 

 intestine, p. 288. Defaecation, p. 288. Vomiting, p. 290. 



Sec. 4, The Changes which the Food undergoes in the Alimentary Canal . 292 



Sec. 5. Absorption of tJie Products of Digestion 301 



The Lymphatics, p. 301. Entrance of the chyle into the lacteals, 

 p. 303. Movements of the chyle, p. 304. Lymph-hearts, p. 306. 

 The course taken by the several products of digestion, p. 306. 



CHAPTER II. 

 THE TISSUES AND MECHANISMS OP RESPIRATION, pp. 312 383. 



Sec. 1. The Mechanics of Pulmonary Respiration 314 



The Rhythm of Respiration, p. 316. The Respiratory Move- 

 ments, p. 319. Facial and Laryngeal Respiration, p. 324. 



Sec. 2. Clianges of the Air in Respiration 326 



Sec. 3. The Respiratory Changes in the Blood 329 



The relations of oxygen in the blood, p. 332. Hemoglobin ; its 

 properties and derivatives, p. 333. Colour of venous and arterial 

 blood, p. 338. The relations of the carbonic acid in the blood, 

 p. 342. The relations of the nitrogen in the blood, p. 343. 



Sec. 4. The Respiratory Changes in the Lungs 344 



The entrance of oxygen, p. 344. The exit of carbonic acid, p. 

 346. 



