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Revision as of 04:26, 8 November 2001 by 203.109.250.xxx (talk)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)The anus, in anatomy, is the external opening of the rectum. It is controlled by sphincter muscles. Faeces are expelled from the body through the anus during the act of defecation, which is the primary purpose of the anus.
See also anal sex.