. Compendium of histology. Histology. U4 ELEVENTH LECTURE. which surrounds the follicle with a reticular passage, and com mences in a caecal manner just beneath the epithelium. Let us also discuss the Peyerian glandular plates. They belong to the lower portions of the human small intestine, and consist, according to their extent, of a very unequal number of aggregated lymphoid follicles. In mammals, where however great mutability prevails, they may also be met with in the large intestine. The human processus vermi- formis, and in still higher development that of the rabbit, forms an enormously
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. Compendium of histology. Histology. U4 ELEVENTH LECTURE. which surrounds the follicle with a reticular passage, and com mences in a caecal manner just beneath the epithelium. Let us also discuss the Peyerian glandular plates. They belong to the lower portions of the human small intestine, and consist, according to their extent, of a very unequal number of aggregated lymphoid follicles. In mammals, where however great mutability prevails, they may also be met with in the large intestine. The human processus vermi- formis, and in still higher development that of the rabbit, forms an enormously developed continuous Peyer's plate. The shape of our follicle changes according to the species of animal. They are rounded in man (Fig. 109) and in the Guinea-pig, and strawberry-shaped in the small intestine of the rabbit, while in the vermiform process of the latter animal. Fig. 109.—Vertical section through a human Peyer's patch : a, intestinal villi; h, Lieberlciihn- ian glands ; c, muscular layer of the mucous membrane ; d, apex of the follicle ; f, basis portion ; g; lymph-passages around the follicle ; i, at the base of the same ; k, lymphatics of the sub-mucous tissue ; /, lymphoid tissue of the latter. an elongated thing, reminding one of the sole of a shoe, is met with. A similar appearance is presented by the Peyerian follicles in the ileum of the ox. Let us now pass to a closer analysis of our structure.. 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 work.. Frey, Heinrich, 1822-1890; Cutter, George R. (George Rogers), b. 1840, tr. New York, G. P. Putnams sons