File:Gastrointestinal villi and crypts cartoon.jpg
Gastrointestinal_villi_and_crypts_cartoon.jpg (500 × 333 pixels, file size: 28 KB, MIME type: image/jpeg)
Gastrointestinal villi and crypts cartoon
Villi
- intestinal mucosa forms intestinal villi about 1 mm long.
- increase the surface area by about ten-fold.
- villi surface is a simple columnar epithelium.
- each absorptive cell or enterocyte of the epithelium forms numerous microvilli (1 µm long and about 0.1 µm wide).
- microvilli increase the surface area again by a factor of about twenty-fold.
Crypys
- crypts of Lieberkühn.
- lie between the intestinal villi and are openings of simple tubular glands.
- extend through the lamina propria down to the muscularis mucosae.
- Undifferentiated cells close to the bottom of the crypts regenerate the epithelium (epithelial cell turnover time is less than one week).
- Other epithelial cells in the crypts correspond largely to those in the epithelium of the intestinal villi.
- Paneth cells
- are located at the bottom of the crypts
- release a number of antibacterial substances, including lysozyme.
- thought to be involved in the control of infections.
Links: Histology | Histology Stains | Blue Histology images copyright Lutz Slomianka 1998-2009. The literary and artistic works on the original Blue Histology website may be reproduced, adapted, published and distributed for non-commercial purposes. See also the page Histology Stains.
Cite this page: Hill, M.A. (2024, June 20) Embryology Gastrointestinal villi and crypts cartoon.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gastrointestinal_villi_and_crypts_cartoon.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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current | 13:48, 18 February 2013 | 500 × 333 (28 KB) | Z8600021 (talk | contribs) | ==Gastrointestinal villi and crypts cartoon== The entire intestinal mucosa forms intestinal villi (about one mm long), which increase the surface area by a factor of ~ ten. The surface of the villi is formed by a simple columnar epithelium. Each absorpti |
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