154 STUDENTS HISTOLOGY 



The deeper parts are lined with translucent cylinders. The lumina 

 are larger than those of the peptic tubes. 



The gastric gland -tubes are placed thickly side by side, their 

 bases reaching the muscularis mucosa?. Between and beneath the 

 tubes is a dense network of blood -capillaries. 



The remainder of the stomach has little special interest for the 

 histologist. The muscular portion of its walls consists of a thin 



FIG. 102. VERTICAL SECTION OP TORTUOUS AND BRANCHING TUBULAR GLAND, 

 PROM PYLOUIC MUCOSA OP STOMACH. DIAGRAMMATIC. 



A. Lumen. This is often much widened. 



B. Duct portion of tubule. 



C. Bi-anching glandular portion, or fundus. 



D. Transverse section of the fundus. 



E. Lower limit of mucosa. 



internal circular layer, with oblique bundles interspersed, and a 

 thin external longitudinal layer, both being of the involuntary 

 variety. Between the two layers is found a plexus of non-medul- 

 lated nerves, corresponding to the plexus of Auerbach, and another 

 in the submucosa, corresponding to the plexus of Meissner of the 

 intestines, but they are not usually demonstrable by ordinary 

 methods or sections. 



The blood -supply is received at the curvatures. Branches 

 penetrate the muscular layers along the lines of omental attach- 

 ment, as blood-vessels never penetrate the peritoneum. 



The peritoneum is constructed mainly of fibrous tissue, with an 

 external investment of endothelium. 



