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By: Torrie Douglas & Mark Legendre The Digestive System Breaks down food; absorbs nutrients; removes food waste. The digestive System consists of 12 key components. The mouth, pharynx, epiglottis, esophagus, liver, gallbladder, stomach, pancreas, small intestine, large intestine, appendix, and anus. The Digestive Tracks First, the food is broken up by your teeth and saliva. Next, the broken down food travels down the esophagus. The food then drops into your stomach, where gastric acids begin to digest it. Quick Quiz: The digestive System handles and breaks down food. After the food is digested, it travels a long journey through the small and large intestines and out of the anus. Quick Quick: The digestive process starts in the mouth. Teamwork Muscular System: The muscular system works with the digestive system when the muscles in the esophagus pushes the broken up food towards the stomach. Quick Quiz: The esophagus is the tube that leads food from the mouth to the stomach. Quick Quiz: Bile is made in the liver. Teamwork Circulatory System: The liver from the digestive system cleans the harmful substances from the blood. Quick Quiz: The liver’s role is to remove the harmful substances from the blood. Teamwork Respiratory System: The epiglottis guards the trachea to prevent food from clogging the trachea. These systems work with the digestive system, and vice versa, in order to keep the human body up and running properly. Bibliography Ballard, Carol. The stomach and digestive system. Austin, Tex.: Raintree Steck-Vaughn, 1997. Print. Brynie, Faith Hickman. 101 questions about food and digestion that have been eating at you-- until now. Brookfield, Conn.: Twenty-First Century Books, 2002. Print. "Digestive System." World Book. D ed. 2007. Print. "Your Digestive System ." KidsHealth - the Web's most visited site about children's health. N.p., n.d. Web. 18 Mar. 2012. <http://kidshealth.org/kid/htbw/digestive_system