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SCI241Wk7_Assignment_HumanDigestionSummary_DavidF

Nutrients are carried away easily because of the rich

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the excretory method. Nutrients are carried away easily because of the rich blood supply in the small intestine. The inner lining have tiny finger like structures called villi. Every villus possesses its individual blood vessel and lacteal. Sugars and amino acids enter into the blood capillary and then are passed into the blood stream. Our energy and what keeps us alive is derived from nutrients transported to our cells. Whatever is sent to the large intestine does not get sent to the other cells. Two main parts of the large intestine are the colon and rectum. The large intestine receives foods that cannot be used by the body. Bacteria breaks down any digested food that gets here. The large intestine then takes away vitamins, water, and minerals from fiber and foods that are not digested. Blood capillaries in the intestinal walls carry away water and salt minerals. The waste becomes more solid as water is removed from it forming what is called feces. A muscle located in large intestine make impressions, pushing the wastes out, then it reaches the rectum. Where, well you get the point!
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ASSIGNMENT: HUMAN DIGESTION SUMMARY 4 Reference Best, A. (n.d.). How the digestive system works. Retrieved from http://www.netplaces.com/digestive-health/assess-your-digestive-health/how-the- digestive-system-works.htm Picco, M. (2010, August 07). Digestion: How long does it take?. Retrieved March 29, 2013 from http://www.mayoclinic.com/health/digestive-system/AN00896
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