Human Digestion - the food reaches the stomach, gastric...

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Human Digestion 1 Human Digestion By: Stephany Boles-University of Phoenix-Axia College SCI241-Professor Gregory Burnett November 27, 2009
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Human Digestion 2 What is digestion? Digestion is the process of breaking down food into molecules small enough for the body to absorb (J. Stein Carter, 1996). Many people are not aware of the work that the body does in order to digest food. Food must go through several organs and structures in order to digest foods. Food enters the body through the mouth. The mouth includes the teeth, tongue, and saliva. Teeth grind the food down small enough that it can be swallowed. Saliva acts as a lubricant to the food. The tongue tastes and manipulates the food (J. Stein Carter, 1996). Once the food leaves the mouth, the food travels into the pharynx and then the esophagus. The food moves along the esophagus until the cardiac sphincter releases the food into the stomach. Once
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Unformatted text preview: the food reaches the stomach, gastric juices mix with the food, which begins the digestion of proteins. The food then passes through the pyloric sphincter into the duodenum. From the duodenum the food enters the small intestines. The small intestine is where the final enzymatic breakdown of food molecules happens. The small intestine is where the majority of the nutrient absorption occurs. Once leaving the small intestine, the food travels to the large intestine. The large intestine is where water and electrolytes turn the food into feces. The feces is finally released from the rectum to eliminate wastes from the body. Human Digestion 3 References J. Stein Carter. 1996. Digestive System. _ Retrieved November 27, 2009 http://biology.clc.uc.edu/Courses/Bio105/digestiv.htm...
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This note was uploaded on 02/28/2010 for the course AXIA COLLE MAT 116 taught by Professor Herman during the Spring '10 term at University of Phoenix.

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Human Digestion - the food reaches the stomach, gastric...

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