Definition for Defecation
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Revision as of 21:03, 1 March 2011 by Bio man (Talk | contribs) (Created page with "The expulsion of feces that occurs through the final portion of the digestive canal: the anus; contractions of the rectum and relaxation of associated sphincter muscles expel the...")
The expulsion of feces that occurs through the final portion of the digestive canal: the anus; contractions of the rectum and relaxation of associated sphincter muscles expel the feces.