. Elements of histology. Histology. 204 Elements of Histology. LChap. xxv. of the general surface, and their tissue is the same as that of the mucosa—, adenoid tissue—with the addition of: (a) One or two central wide chyle (lymph) vessels (see Fig. 120), their wall being a single layer of endothelial plates, (b) Along these chyle vessels are longitudinal bundles of non-striped muscular tissue, extending from the base to the apex of the villus, terminating in connection with the cells of the base- ment membrane—, the subepithelial endothelium. (c) A network of capillary blood- vessels e
. Elements of histology. Histology. 204 Elements of Histology. LChap. xxv. of the general surface, and their tissue is the same as that of the mucosa—, adenoid tissue—with the addition of: (a) One or two central wide chyle (lymph) vessels (see Fig. 120), their wall being a single layer of endothelial plates, (b) Along these chyle vessels are longitudinal bundles of non-striped muscular tissue, extending from the base to the apex of the villus, terminating in connection with the cells of the base- ment membrane—, the subepithelial endothelium. (c) A network of capillary blood- vessels extending over the whole of the villus close to the epithelium of the surface (Fig. 119). This capil- lary network de- rives its blood from an artery in about the middle or upper part of the villus. Two ve- nous vessels carry away the blood from the villus. The Lieberkiihn's crypts open between the bases of the villi. At the sides of the villi of the small intestine, and at the sides of the plicae villosae of the stomach (see a former chapter), there exist amongst the epithe- lium of the surface peculiar goblet-shaped groups of epithelial cells, which, as Watney has shown, are due to local multiplication of the epithelial cells. 272. Lymph follicles occur singly in the submucosa, and extend with their inner part or summit through the muscularis mucosae into the mucosa to near the. Fig. 119.—From a Vertical Section through the Small Intestine of Mouse; the Blood- vessels are injected. The networks of the capillaries of the villi are well shown. (Atlas.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Klein, E. (Edward), 1844-1925. Philadelphia : H. C. Lea's Son
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