File:Intestine villi crypts cartoon.jpg
From Embryology
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Intestine Histology Cartoon
Intestinal Villi
- cover entire intestinal mucosa
- about one mm long
- increase the surface area by a factor of ~ ten.
- villi surface formed by a simple columnar epithelium.
- each absorptive cell or enterocyte of the epithelium forms numerous microvilli
Intestinal Crypts
(crypts of Lieberkühn)
- 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/replace 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
- Intestine Histology Links: Duodenum overview | Duodenum villi and crypts | Duodenum | Jejunum overview | Jejunum villus | Jejunum labeled | Jejunum unlabeled | Gastrointestinal Tract Histology | Intestine Development
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 15) Embryology Intestine villi crypts cartoon.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Intestine_villi_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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