354 



THE DIGESTIVE SYSTEM 



The character of the gastric glands differs somewhat in various 

 portions of the stomach. The three varieties, according to their dis- 

 tribution, are known 

 as the fundus glands, 

 the pyloric glands, and 

 the cardiac glands. 



THE FUNDUS 

 GLANDS (Peptic 

 Glands}. These are 

 somewhat branched 

 tubular glands which 

 possess short ducts, 

 the crypts or foveolce, 

 and relatively long se- 

 creting portions, sev- 

 eral of which open, by 

 means of short con- 

 stricted portions, the 

 necks of the glands, 

 into the bottom of 

 each crypt. 



The excretory 

 ducts or crypts are 

 lined with tall colum- 

 nar cells which possess 

 a remarkably clear cy- 

 toplasm distally, and 

 whose nuclei lie at the 

 proximal or attached 

 ends of the cells. This 

 epithelium rests upon 

 a distinct basement 

 membrane of reticular 

 tissue (Mall) ; it 



FIG 



d e d 



330. THE MUCOSA OF THE FUNDUS REGION OF 

 THE DOG'S STOMACH. 



is 



a, gastric crypts; b, neck region, and c, fundus por- 

 tions of the gastric glands, the parietal cells being 

 much more abundant in the former; d, muscularis mu- 

 cosse; e, submucosa. Hematein and eosin. Photo. 

 X 80. 



also continued over that portion of the corium which occupies the inter- 

 vals between adjacent ducts, where it forms the true lining epithelium of 

 the stomach. Its cells secrete a clear muco-albmninous fluid. 



Between the distal ends of the cells terminal bars occur; they possess 

 also indistinct cuticular borders. 



The secreting portion, or fundus, of the gland is five to eight times 



