Complete the Human Digestion activity located at http

Complete the Human Digestion activity located at http - the...

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Complete the Human Digestion activity located at 41 / sci2 41 -digestivetract.html . Describe, in 200 to 300 words, the path food follows through the digestive system and how digestion occurs in each of the following parts of the digestive system. Include descriptions of other organs or components of the digestive system, including: o Large intestine o Esophagus o Mouth and Salivary Glands o Small intestine o Stomach When food enters the mouth, the salivary glands have already started working, as the food is chewed and mixed with saliva it then turns into bolus. After it has transformed into bolus it enters the pharynx to be swallowed, and then enters the esophagus, which is a part of the gastrointestinal tract that connects the pharynx to the stomach. Once the bolus reaches the stomach it is then mixed with acidic secretions that turn it into a semi liquid state called chyme,
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Unformatted text preview: the chyme and the partially digested food leaves the stomach within 2 to 6 hours, depending on the type and size of the meal. The semi digested food and chyme then enter the small intestine, here the majority of the digestive process and nutrient absorption takes place. Bile secreted by the liver and gallbladder helps to aid in the absorption of and digestion of fat, and enzymes and bicarbonate secretions from the pancreas help the digestive process. Any undigested foods then enter the large intestine, while a sphincter keeps it from reentering the small intestine. The colon and the rectum are both parts of the large intestine, and the colon absorbs any additional water, vitamins and minerals. Any additional materials that are not absorbed by the colon are then excreted as feces from the colon and out via the anus....
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