Digestion System essay

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The digestion process does not take place much more fully in the stomach but in the intestines.  The Intestines are usually split into two: Small intestines and large intestines. The small intestine is almost 20 feet long and is the one accountable for extracting nutrients from food and carrying water in the body. The small intestines also bring electrolytes in the body. The small intestines are also responsible for taking food to the large intestine. The small intestine has three parts including jejunum, ileum and the duodenum (Collins, 2007).According to Sears (2010), digestion commences in the mouth and food in the stomach is not digested fully. When food goes out of the stomach, it enters in the small intestines in form of a liquid. The duodenum is the one that recives the food from the stomach and it uses the secretions received fro the liver and pancreas to remove nutrients from the food.  The secretions are received using the bile duct. Digestive enzymes are secreted from the inner walls of the intestines so as to aid in food breakdown.  Jejunum also facilitates digestion though only small digestion and absorption takes place. Jejunum covers the center of the intestine. Ileum acts as a channel from the small intestine to the large intestine.
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The large intestines can also be known as colon or bowel. It starts from the ileum end up in the anus.  Its parts are taenia coli, haustrae, cecum, ileocecal valve and the rectum. Any food that is not digested in the small intestines is passed to the large intestines.  There are microbes in the large intestines that aid in the digestion process (Kimball, 2007). Some electrolytes like the sodium chemical and water are extracted from the food. There are bacteria in the intestine that synthesizes vitamins like Vitamin K and Vitamin B. The large intestines are responsible for storing waste temporarily before removing the waste from the body. The waste is usually in solid matter as all water has been removed. The small intestines are the ones that play the important role in digestive system. Most digestion occurs there.

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