File:Gastrointestinal villi and crypts cartoon.jpg: Difference between revisions
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(==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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==Gastrointestinal villi and | ==Gastrointestinal Villi and Crypts cartoon== | ||
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! Villi | |||
! Crypts | |||
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* 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. | |||
| width=400px valign=top| | |||
* 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. | |||
|} | |||
{{Blue Histology}} | |||
[[Category:Gastrointestinal | [[Category:Gastrointestinal Tract]] [[Category:Intestine]] [[Category:Cartoon]] |
Latest revision as of 14:15, 24 March 2014
Gastrointestinal Villi and Crypts cartoon
Villi | Crypts |
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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 23) 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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