Propulsion. Accessory digestive organs, despite their name, are critical to the function of the digestive system. Absorption. Food must be placed into the mouth before it can be acted on; this is an active, voluntary process called ingestion. All rights reserved including the right of reproduction in whole or in part in any form. In addition to being a fuel source (as in the case of carbohydrates), food contains vital raw materials, in the form of small monomers and chains of polymers that we use for repair, growth, defense, and so on.
Excerpted from The Complete Idiot's Guide to Anatomy and Physiology © 2004 by Michael J. Vieira Lazaroff. Infoplease is part of the FEN Learning family of educational and reference sites for parents, teachers and students. Infoplease knows the value of having sources you can trust. Infoplease is a reference and learning site, combining the contents of an encyclopedia, a dictionary, an atlas and several almanacs loaded with facts. The functions of the digestive system are: 1. As the food travels along the digestive tract, various enzymes are released, which chemically change the complex polymers into the basic monomers that our bodies will ultimately use. Check our encyclopedia for a gloss on thousands of topics from biographies to the table of elements. Learn about one of the world's oldest and most popular religions. We are biological machines who need a constant supply of materials and fuel in order for us to function. As you have seen before, the structure of the different organs will vary according to their functions. FEN Learning is part of Sandbox Networks, a digital learning company that operates education services and products for the 21st century. It is important to note that digestive enzymes can digest your own body! Brush up on your geography and finally learn what countries are in Eastern Europe with our maps. Despite the intimate relationship we all have with food, far too many people are ill informed on the basics of the digestive system. Our editors update and regularly refine this enormous body of information to bring you reliable information.
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This is a shame, because this system of tubes, transport, breakdown, and ultimately distribution runs the gamut from the wonderful to the disgusting. The functions of the digestive system are …. 2. Given that we are what we eat, we will also follow the many twisted pathways from the moment our food touches our lips, to the point where it reaches our hips (whether it stays for a life-time or not!). Need a reference? The organs, our protagonists, run the risk of destroying themselves because they are made of the same basic materials as the food we eat, and they have thus evolved many clever ways of protecting themselves. Secretion. Simply put, if we stop eating we will ultimately die. The need for fuel and materials is so strong that our bodies will start to break down what we have already built (such as our fat reserves and even our muscles) in order to survive.
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