CHAP. II.] 



THE PYLORIC GLANDS. 



63 



The pyloric Our knowledge of microscopical characters of the 

 pyloric glands is chiefly due to Ebstein 1 . The characters 

 of the pyloric glands are tkuB summarized, and compared with those 

 of the peptic glands, by Dr Klein : " The duct is proportionately 

 very long ; it amounts to half or more of the whole length of the 

 gland : two or three tubes open into the duct by a very short neck, 

 which represents the narrowest part of the gland : the body of the 

 gland is branched into two or three tubes, which are wavy and convo- 

 luted ; the lumen of the neck, but especially that of the body of the 

 gland, is much larger than in the corresponding parts of the peptic 

 gland ; the lumen in the body of the former glands being many times 

 longer than that of the latter. The epithelium covering the surface 

 of the mucosa and lining the ducts in the pyloric region is exactly 

 the same as in the rest of the stomach. The epithelium lining the 

 neck and body of these glands is a continuation of that of the duct : 

 but, as in the case of the peptic gland, so also here the cells are 

 shorter and more opaque in the neck than in the body. In the latter 

 the cells are fine, more or less transparent, columnar ceils ; in no 

 part are there parietal cells 2 ," &c. 



SCHEMATIC REPRESENTATION OF A PYLORIC GLAND. (LANDOIS.) 



1 Ebstein, Arch. f. mik. Anat. vi. p. 515, 1870. 



- Klein and Noble Smith, Atlas of Histology, pp. 205 and 206, 1880. 



