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STUDENTS HISTOLOGY 



THE STOMACH 



The mucosa everywhere contains microscopical depressions, the 

 gastric tubules or glands. These are concerned in the production 

 of the gastric juice. 



The several layers of the stomach may be better understood by 

 reference to the diagram (Fig. 100). 



The gastric tubular glands are of two principal varieties; viz., 



1, the peptic glands, found in the cardiac portion of the stomach; 



2, the pyloric glands, which occupy the pyloric extremity of the 



FIG. 100. DIAGRAM OF THE WALL OF THE STOMACH IN VERTICAL SECTION. 



A. Layer of gastric tubules. 



B. Vascular portion of mucosa. 



C. Muscularis mucosag. 



D. Submucosa. 



E. Internal circular layer of muscular fiber. 



F. External oblique and longitudinal muscular layers. 



G. Peritoneum. 



I, I, I. Lumen of gastric tubules. 

 J, J. Branching gastric tubules. 



K, K. Blood-vossels arising from lower portion of mucosa 

 forming plexuses between the tubules. 



organ. The mucous membrane, midway between the cardiac and 

 pyloric portions, is occupied by tubules which partake of the 

 character of both peptic and pyloric glands, so that no sharp 

 boundary line exists. 



