Title: Small Intestine Function: Duodenum, Jejunum And Ileum | Science Trends
Headings: Small Intestine Function: Duodenum, Jejunum And Ileum
Small Intestine Function: Duodenum, Jejunum And Ileum
The Three Primary Parts Of The Small Intestine
Layout Of The Small Intestine
Function Of The Small Intestine
“Gut health is the key to overall health.” — Kris Carr
The Digestive Process
Diseases Of The Small Intestine
“Which came first, the intestine or the tapeworm?” — William S. Burroughs
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Content: Kris Carr
The folds are wrinkles within the small intestine that have small thin cells within them called microvilli, which increase the available surface area even further. Thanks to all the surface area in the small intestine, by the time the digested food leaves the ileum and enters the large intestine (or colon), 95% of the nutrients that the body requires have been pulled out of the chyme (partially digested food). ADVERTISEMENT
Absorption of the nutrients happens within the epithelial layer of cells. Goblet cells are found in the epithelial layer, and they protect this layer from digestive enzymes by secreting mucus. Hormones are secreted into the blood that vessels that penetrate the villus (the larger structure which holds the microvillus). These hormones are secreted by Enteroendocrine cells. Lysosomes, an enzyme that destroys bacteria, are secreted by paneth cells in the epithelial layer. Photo: By Goran tek-en – Own workThis file was derived from: 2402 Layers of the Gastrointestinal Tract.jpg, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=31413106
The small intestine’s wall is divided into four different layers.