GLANDS OF THE STOMACH. 



269 



epithelium lining them is not the same throughout. In; 

 the upper third or fourth of their length it is cylindrical^ 



and continuous with that which covers the free mucous 

 surface of the rest of the stomach. In their lower part, on 

 the other hand, it is of the variety called glandular or sphe- 

 roidal, the cells being oval or somewhat angular, and 

 about -r^V ir tn f an i ncn i n diameter. The cells, however, 

 do not completely fill up the cavity of the gland which they 

 line, but leave a slight, central, thread-like space, the im- 

 mediate lining of which is a layer of small angular cells, 

 continuous with the cylindrical epithelium in the upper 

 portion of the tube. This description will become plain on 

 reference to fig. 71, which represents on a larger scale a 

 longitudinal section of one of the glands depicted in fig. 69. 



* Fig. 70. The gastric glands of the human stomach (magnified). 

 a, deep part of a pyloric gastric gland (from Kolliker) ; the cylindrical 

 epithelium is traceable to the csecal extremities, b and c, cardiac 

 gastric glands (from Allen Thompson) ; b, vertical section of a small 

 portion of the mucous membrane with the glands magnified 30 diameters ; 

 c, deeper portion of one of the glands, magnified 65 diameters, showing 

 a slight division of the tubes, and a sacculated appearance, produced 

 by the large glandular cells within them ; d, cellular elements of the 

 cardiac glands magnified 250 diameters. 



