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Anus

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 function of the anus.

See also anal sex, asshole, enema, cloaca[?].



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Urethra

... is the skeletal muscle that allows voluntary control over urination. In the human female, the urethra is about 1-1.5 inches (25-38 mm) long and opens in the vulva ...

 
 
 
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