Chapter 29 Bowel Elimination - Chapter 29 Bowel Elimination The gastrointestinal system is composed of the mouth pharynx esophagus stomach liver small

Chapter 29 Bowel Elimination - Chapter 29 Bowel Elimination...

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Chapter 29 Bowel Elimination The gastrointestinal system is composed of: the mouth, pharynx, esophagus, stomach, liver, small intestine, large intestine, rectum and anus. Food is first chewed in the mouth where digestion begins by the enzymes found in saliva that break down food. Your tongue pushes the food to pharynx where it is swallowed down the esophagus and dumped into the stomach. The stomach stores food while churning and mixing it so that the acids can further break down the food into a liquid called chyme. After about 4 hours, the chyme is then squeezed into the small intestine. The liver and gallbladder release bile, while the pancreas releases enzymes, into the duodenum for digestion of lipids, proteins, and carbohydrates. The jejunum is the next portion of the small intestine where carbohydrates and proteins are absorbed into the blood stream. The final part is the ileum, which connects the small intestine to the large intestine. This is responsible for the absorption of fats; bile salts; and some vitamins, minerals, and water.
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  • Fall '13
  • Nursing, Digestive System, Large intestine, bowel elimination, Small intestine

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