Text-Book of Histology; Including the Microscopic Technic

Text-Book of Histology; Including the Microscopic Technic

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 edition. Excerpt: ...fibers and in the upper half of the duodenum contains branched simple tubular glands, the duodenal glands (Brunner), from 0.2 to 3.4 mm. in size. The excretory ducts of these glands are clothed with columnar cells, pierce the muscularis mucosae, and run in the tunica propria parallel with the intestinal crypts. The walls of the tubules are formed of columnar gland-cells and a structureless membrana propria. The muscular layer of the intestine consists of an inner robust circular and an outer thinner longitudinal stratum of smooth muscle-fibers. For the structure of the serosa see "The Peritoneum," page 264. ENDGUT. The Large Intestine. The wall of the large intestine likewise consists of a mucous, a muscular, and a serous coat. The mucous coat is smooth, villi are wanting, and the glands are twice as long (0.4 to 0.6 mm.) as those of the small intestine. The epithelium, tunica propria, and muscularis mucosae are the same as those Glands. Fat-cells. Solitary noilule with germinal center. Fig. 166.--Vertical Section Of The Mucous Membrane Of The Descending Colon Of Man. X 80. Compare the length of the glands with those of the small intestine (Fig. 162), that are from the same Individual and drawn under the same magnification. Technic No. 114. of the small intestine, with which they also agree in their microscopic structure and in the regeneration of the epithelium. The glands contain a relatively large number of goblet-cells. The reason for this lies in the fact that the young epithelial cells originating in the glands of the small intestine move more rapidly to the surface; for the superficies of the small intestine, so greatly augmented by the villi, requires a larger reparative supply to replace the cells perishing there; the...
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Product details

  • Paperback | 174 pages
  • 189 x 246 x 9mm | 322g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236600290
  • 9781236600295