Manual of human histology . lyoccasionally subjected in the stomach. After death this takesplace so readily, that the cells can be seen in situ, in man, onlyunder very favorable circumstances. Perhaps, also, detach-ment of the epithelium to a certain extent may take placenormally, in one way or another, during digestion; at least, inanimals the quantity of loose epithelial cells is often verygreat and they frequently almost entirely constitute themucous coating which covers the surface of the stomach. Besides the tubular glands, the stomach also contains, thoughthey are inconstant and vary ver
Manual of human histology . lyoccasionally subjected in the stomach. After death this takesplace so readily, that the cells can be seen in situ, in man, onlyunder very favorable circumstances. Perhaps, also, detach-ment of the epithelium to a certain extent may take placenormally, in one way or another, during digestion; at least, inanimals the quantity of loose epithelial cells is often verygreat and they frequently almost entirely constitute themucous coating which covers the surface of the stomach. Besides the tubular glands, the stomach also contains, thoughthey are inconstant and vary very much in number, closedfollicles—the so-called lenticular glands, which are identical in 90 SPECIAL HISTOLOGY, structure with the solitary follicles of the small intestine, andtherefore need not be further described in this place.^ The blood-vessels of the gastric mucous membrane are very-numerous, and their distribution is quite characteristic (com-pare fig. 205, representing the vessels of the large intestine, Fig. 205. polygonal. whose arrangement is almost the same).The arteries begin to divide in the sub-mucous connective tissue, in such a man-ner, that only their finer brandies reachthe mucous membrane, in which, graduallybreaking up into capillaries, they ascendin great numbers, perpendicularly, be-tween the glands and form a network offine capillaries of 0002—0*003, aroundthe tubes, which extends as far as tothe apertures of the glands. Herethis network, which we may regard ascontinuous through the whole stomach,passes into a superficial reticulation ofsomewhat larger capillaries, of 0*004—0-008, whose meshes, in man, are0-02—0-04 in diameter and encircle the Fig. 205. Vessels of the large intestine of a Dog, the mucous membrane being cutthrough perpendicularly: a, artery; b, capillary network of the surface, with glandu-lar apertures; c, vein ; d, capillary network round the glandular tubules in the thick-ness of the mucous membrane. • [ Although it may be t
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Keywords: ., bookcentury1800, bookdecade1850, booksubjecthistolo, bookyear1853
