SCI-241 WK2 CP1 - in 2 to 6 hours depending on the food...

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Human Digestion Human Digestion CheckPoint Jose Gonzalez Axia College of University of Phoenix 1
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Human Digestion The digestive process begins before one even begins to eat. This is because the first site or smell of food will activate the salivary glands . Once food has entered the mouth and is chewed by the teeth, the food is then moistened by saliva witch makes the food easier to digest. Once the food leaves the mouth it enters the pharynx , this is the passageway for air and food but is responsible for swallowing. After the pharynx the food moves down to the esophagus , this is a portion of the gastrointestinal tract that reaches from the pharynx to the stomach . After food travels down the esophagus it then reaches the stomach. The food mixes with acid secretions in the stomach which then transforms the food into what is called chyme, a semi- liquid food mass. The stomach then partially digests the food and the chyme will typically empty
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Unformatted text preview: in 2 to 6 hours depending on the food consumed. Once food is broken down in the stomach it then moves to the small intestine , the small intestine is responsible for the majority of digestion and absorption of nutrients. The small intestine is divided into three parts, the duodenum, jejunum, and ileum. The liver and gallbladder secrete bile which also helps with digestion and absorption of fat. After this process, materials which were not absorbed in the small intestine then continue on to the large intestine. They enter the large intestine through a sphincter; the sphincter keeps materials from reentering the small intestine. Contained in the large intestine are also the colon and rectum, any additional absorption of water, vitamins, and minerals occurs in the colon. Any materials not absorbed at this point are then excreted through the anus which is attached at the end of the colon. 2...
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This note was uploaded on 05/24/2010 for the course SCI241 SCI241 taught by Professor Vickibaxter during the Spring '10 term at University of Phoenix.

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SCI-241 WK2 CP1 - in 2 to 6 hours depending on the food...

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