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PRACTICAL HISTOLOGY. 



[xxiv. 



FIG. 258. T.S. Duct of Gland of Fundus. a 

 Chief, h. Parietal cells ; r. Adenoid tissue 

 c. Capillaries. 



cells few in number and inside these a complete layer of inner 

 cells bounding the small lumen of the tube (fig. 258). The glands 



are arranged in groups as shown 

 by the connective tissue sur- 

 rounding several tubes. This 

 is very marked in the pig. 



3. Fresh Fundus Glands. 

 From the 

 m u c o u s 

 membrane 

 of the sto- 

 mach of a 

 newly- 

 k i 1 led 

 guinea-pig 

 make a 

 thin verti- 

 cal section 

 with scis- 

 sors, and tease it in normal saline to isolate 

 some of the glands. This animal is selected 

 because its gland-tubes are short, but a rabbit 

 does very well. The elevations of the base- 

 ment membrane due to the bulging of the 

 parietal cells are usually well seen. 



4. V.S. Pyloric Mucous Membrane (fig. 

 259). (a.) (L) Observe the same arrangement 

 of coats as in the cardiac end ; but the muscu- 

 lar coats are thicket- ; the mouths of the gland- 

 tubes are wider and longer, the secretory part 

 more branched and shorter than in the cardiac 

 portion. There is also much more connective 

 tissue between the glands. 



(&.) (H) The wide mouth of the glands, lined 

 by narrow columnar epithelium, the secretory 

 part consists of several tubes opening into one 

 gland-duct. The secretory part lined by a 

 single layer of cells, somewhat cubical, but 

 there are no parietal cells. 



(c.) There is much more connective tissue 

 between the tubes. A mass of adenoid tissue 

 solitary follicle may be seen in the deeper 

 part of the mucous coat. In some cases its pointed apex may be 

 seen reaching nearly to the surface of the mucous membrane. 



5. Osmic Acid Preparations. Few reagents are so good for 



259. V.S. Pyloric 

 Mucous Membrane. D. 

 Duct ; S. Secretory part 

 of gland ; C. Connective 



tissue. 



