VESSELS AND NERVES OF THE STOMACH. 



355 



Fk'. 249. 



M 



(Hauptzellen) of the gland. The columnar epithelium cells of the mouths of 

 the glands, as well as of the general sui'face, contain and secrete mucus, and axe 

 hence very readily transfomied 

 into goblet-cells after death. In 

 some animals, the dog, for 

 example, it is found that the 

 pyloric jjart possesses only the 

 so-called mucous glands ; the 

 cardiac part only peptic, the two 

 kinds passing, however, gradu- 

 ally the one into the other. In 

 the human subject, however, 

 the two kinds of glands are less 

 distinctly separated. 



Between and at the base 

 of the glands the mucous 

 membrane consists of a 

 delicate connective tissue 

 ■with retiform or lymphoid 

 tissue in small amount. 



The stomachs of young 

 persons, to all appearance 

 healthy, sometimes present 

 a mammillated aspect, due 

 to little elevations of the 

 surface, which are produced 

 by local accumulations of 

 lymphoid tissue, and some- 

 what resemble the solitary 

 follicles of the intestine in 

 iuppearance. The lymphoid 

 accumulations in question 

 are, however, situated 

 amongst the glands near the 

 .surface of the stomach, and 

 do not extend into the sub- 

 raucous tissue ; moreover 

 they are not distinctly cir- 

 cumscribed, but fade oft' into 

 the surrounding retiform 

 tissue, 



A thin layer of plain mus- 

 cular tissue {muscularis mu- 

 cosa) bounds the mucous 



Fig. 249. — Gastric Glands from the Dog's 

 Stomach, Highly Magnified. 



P. Portions op a "Peptic" Gland. 

 1, neck of the gland ; 2, fundus ; 3, transverse 

 section ; p, peptic cells (Belegzellen) ; /(, central 

 cells (Hauptzellen) ; c, ends of columnar cells (after 

 Heidenliain). 



M. A Pyloric or JMucous Gland. 

 in, mouth ; ■/?, neck ; tr, a deep jiortion cut 

 transversely (after Ebstein). 



membrane externally, sepa- 

 rating it from the submucous tissue (fig. 247, I). It commonly con- 

 sists of more than one stratum (an outer longitudinal and an inner 

 circular), and is better marked in some animals than in man. Off- 

 sets pass from it between the gastric glands towards the surface of 

 the mucous membrane. 



Vessels and Nerves. — The stomach is a highly vascular organ. Its arterial 

 branches, derived from all three divisions of the coeliac axis, reach the stomach 

 between the folds of the peritoneum, and form, by anastomosing together, two 

 principal arterial arches, which ai"e placed along its two ciu'vatures. After 



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