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IBD is an autoimmune disease also known as inflammatory bowel diseaseIt represents two closely linked diseases Crohns disease andulcerative colitis It uses the bodys immune system to attack organs inthe GI tract such as the colon or large intestine The GI tract or gastrointestinal system extends from the mouth to theanal canal Its major function is to digest food while absorbing thenutrients and eliminating the waste Lying mostly in the abdominalcavity it is protected by a tissue called peritoneum This tissue is athin and easy to see through Digestion begins as soon as food entersthe oral cavity Once swallowed into the esophagus it enters the stomachwhich crushes the food and gets it ready to enter the small bowel orsmall intestine The small intestine can be anywhere between three tosix meters in length and be convoluted in the abdomen The smallintestine is broken down into three sections the duodenum jejunum andthe ileum Linked to the stomach is the duodenum which is only a fewcentimeters long The second section of the small intestine is thejejunum Its between five to ten feet long making it much longer thanthe duodenum The jejunum is where most of food digestion and absorptiontakes place Next is the ileum which also extends five to ten feet inlength Along with the jejunum the ileum helps to digest fats It alsohelps to absorb things such as bile salts and vitamin B12 Once digestedin the ileum chyme then enters into the colon The colon is alsoreferred to as the large part of the bowel Like the small bowel italso has sections The colon begins with the cecum which is positionedslightly below the connection of the ileum and the colon Connected tothe cecum is the ascending colon ascending meaning upward Runningacross the abdomen is the transverse colon which connects to thedescending colon The last section of the colon connected to the analcanal is the rectum With all sections the colon is able to carry
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