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The ileum (/ ˈ ɪ l i əm /) is the final section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds. In fish , the divisions of the small intestine are not as clear and the terms posterior intestine or distal intestine may be used instead of ileum. [ 2 ]
As a result, huge amounts of fatty acids, which are normally absorbed in the small intestine, enter the colon, where they cause irritation of the colon wall and the secretion of excessive volumes of water and electrolytes, especially sodium and potassium, leading to diarrhea. This diarrhea is the major patient complaint and has characterized ...
The small intestine or small bowel is an organ in the gastrointestinal tract where most of the absorption of nutrients from food takes place. It lies between the stomach and large intestine, and receives bile and pancreatic juice through the pancreatic duct to aid in digestion. The small intestine is about 5.5 metres (18 feet) long and folds ...
The small intestine is involved in both the absorption and digestion of nutrients, whereas the large intestine is responsible for the elimination of wastes . The small intestine consists of 3 parts: duodenum, jejunum and ileum. [3] The duodenum is the first part of the small intestine and is connected to the stomach via the pyloric valve. The ...
In the lower small intestine and colon, bacteria dehydroxylate some of the primary bile salts to form secondary conjugated bile salts (which are still water-soluble). Along the proximal and distal ileum , these conjugated primary bile salts are reabsorbed actively into hepatic portal circulation.
This enterohepatic circulation of bile acids takes place four–six times in 24 hours and usually less than 0.5 g of bile acids enter the large intestine per 24 h. When larger amounts of bile acids enter the large intestine, they stimulate water secretion and intestinal motility in the colon, which causes symptoms of chronic diarrhea. [5]
Ileitis is an inflammation of the ileum, a portion of the small intestine. Mycobacterium tuberculosis infection may mimic Crohn's disease Ileitis. [1] Ileitis may be linked to a broad range of illnesses, such as sarcoidosis, amyloidosis, ischemia, neoplasms, spondyloarthropathies, vasculitides, drug-related conditions, and eosinophilic ...
The ileocecal valve (ileal papilla, ileocaecal valve, Tulp's valve, Tulpius valve, Bauhin's valve, ileocecal eminence, valve of Varolius or colic valve) is a sphincter muscle valve that separates the small intestine and the large intestine. [1] Its critical function is to limit the reflux of colonic contents into the ileum. [2]