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: The small intestine starts just after the stomach, with the region known as the duodenum. The duodenum originates at a structure dubbed the duodenal bulb, and it then follows a course that moves around the top of the pancreas. The duodenum ends as it links up with the peritoneal cavity at the Treitz ligament. Following this is the peritoneal cavity, a large, thin membrane located within the abdomen that covers most of the organs there. ADVERTISEMENT
The rest of the small intestine is located within this cavity, suspended in it by structures that attach the small intestine to the posterior abdominal wall. The suspended nature of the small intestine means that the small intestine can move within the abdominal cavity quite freely. The next third of the small intestine is the jejunum, while the final third of the small intestine is the ileum. The jejunum is found in the upper-left part of the abdomen, while the ileum is located on the upper right side of the pelvis. Folds are located in the small intestine, referred to as plicae circulate. The plicae decrease in number as they move from the jejunum to the ileum.