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alimentary canal
alimentary canal (digestive tract; gut) A tubular organ in animals that is divided into a series of zones specialized for the ingestion, digestion, and absorption of food and for the elimination of indigestible material (see illustration). In most animals the canal has two openings, the mouth (for the intake of food) and the anus (for the elimination of waste). Simple animals, such as cnidarians (e.g. Hydra and jellyfish) and flatworms, have only one opening to their alimentary canal, which must serve both functions.
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"alimentary canal." A Dictionary of Biology. 2004. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "alimentary canal." A Dictionary of Biology. 2004. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O6-alimentarycanal.html "alimentary canal." A Dictionary of Biology. 2004. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-alimentarycanal.html |
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alimentary canal
alimentary canal In animals, a tube along which food passes and through parts of whose walls nutrients are absorbed into the body. In some animals (e.g. coelenterates) the canal has a single opening. In most animals it has two: a mouth through which food enters; and an anus through which unabsorbed material leaves the body.
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MICHAEL ALLABY. "alimentary canal." A Dictionary of Zoology. 1999. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "alimentary canal." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O8-alimentarycanal.html MICHAEL ALLABY. "alimentary canal." A Dictionary of Zoology. 1999. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-alimentarycanal.html |
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alimentary canal
alimentary canal Digestive tract of an animal that begins with the mouth, continues through the oesophagus to the stomach and intestines, and ends at the anus. It is about 9m (30ft) long in humans. See also digestive system
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"alimentary canal." World Encyclopedia. 2005. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "alimentary canal." World Encyclopedia. 2005. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O142-alimentarycanal.html "alimentary canal." World Encyclopedia. 2005. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-alimentarycanal.html |
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alimentary canal
alimentary canal (ali-ment-er-i) n. the long passage, extending from the mouth to the anus, through which food passes to be digested and absorbed.
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"alimentary canal." A Dictionary of Nursing. 2008. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "alimentary canal." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O62-alimentarycanal.html "alimentary canal." A Dictionary of Nursing. 2008. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-alimentarycanal.html |
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alimentary canal
alimentary canal See gastro‐intestinal tract.
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DAVID A. BENDER. "alimentary canal." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. DAVID A. BENDER. "alimentary canal." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O39-alimentarycanal.html DAVID A. BENDER. "alimentary canal." A Dictionary of Food and Nutrition. 2005. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O39-alimentarycanal.html |
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alimentary canal
alimentary canal see digestive system . |
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Cite this article
"alimentary canal." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "alimentary canal." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1E1-X-alimenta.html "alimentary canal." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-alimenta.html |
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