364 



FOOD AND DIGESTION 



the duct of the gland between the chief cells and connecting with intracellular 

 secretory tubules in the parietal cells have been shown by the Golgi silver 

 method, by napthol blue, etc., figure 256. 



As the pylorus is approached the gland ducts become longer and the 

 tube proper becomes shorter, and occasionally branched at the fundus. 



The Pyloric Glands. These glands have much longer ducts and larger 

 mouths than the peptic glands. 



The parietal cells are absent in the pyloric glands. The pyloric glands 

 become larger as they approach the duodenum, also more convoluted and 

 more deeply situated. They are directly continuous with Brunner's glands 

 in the duodenum (Watney). 



FIG. 258. Scheme of Blood Vessels and Lymphatics of Stomach. X 70. a, Mucous 

 membrane; &, muscularis mucosae; c, submucosa; d, inner circular muscle layer; e, outer 

 longitudinal muscle layer; A, blood vessels; B, structure of coats; C, lymphatics. (Szymo- 

 nowicz, after Mall.) 



Blood vessels and Lymphatics. The blood vessels of the stomach first 

 break up in the submucous tissue and send branches upward between the 

 closely packed glandular tubes, which anastomose around them by a fine 

 capillary network with oblong meshes. Contiguous with this deeper plexus, 

 or prolonged upward from it, so to speak, is a more superficial network of 

 larger capillaries, which branch densely around the orifices of the tubes and 

 form the framework on which are molded the small elevated ridges of mucous 



