x CONTENTS. 



SECTION V. 

 THE SECRETION OF PANCREATIC JUICE AND OF BILE. 



PAGE 



252. The secretion of pancreatic juice 457 



253. The discharge of and the secretion of bile. The vascular conditions 

 of the liver and their relations to the secretion of bile. The 

 influence of absorbed products of digestion .... 459 

 254. The vaso-motor changes of the alimentary canal in relation to the 



presence of food 463 



255. The pressure at which bile is secreted 464 



256. The resorption of bile 464 



SECTION VI. 

 THE STRUCTURE OF THE INTESTINES. 



The Small Intestine. 



257. The general plan of structure of the intestine 466 



258. The general structure of the mucous membrane of the small 



intestine 466 



259. Eetiform and adenoid tissue 467 



260. The Villi. The columnar epithelium 470 



261. The goblet cells of the villi 471 



262. The structure of the body of a villus 472 



263. The crypts or glands of Lieberkiihn 474 



264. The glands of Brunner 475 



The Large Intestine. 



265. The special features of the large intestine ..... 475 

 266. The structure of the rectum 476 



SECTION VII. 



THE MUSCULAR MECHANISMS OF DIGESTION. 



267. The nature of peristaltic movements 478 



268. Mastication . . . 480 



269. Deglutition ; its phases, nature and nervous mechanism . . . 480 



270. The movements of the ossophagus 483 



271. The movements of the stomach 484 



272. Vomiting 486 



273. The movements of the small intestine 488 



274. The movements of the large intestine 488 



275. Defecation 489 



276. The nervous mechanisms of gastric and intestinal movements . 490 



277. Influences bearing on peristaltic movements 494 



