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Anus - Anatomy & Physiology (view source)

Revision as of 15:52, 16 July 2008

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==Introduction==

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The anus is the terminal portion of the alimentary tract which communicates with the external environment. Two sphincters control it's aperture. It allows faeces and gas to leave the body. Defeacation is the process where faeces are expelled from the [[Rectum - Anatomy & Physiology|rectum]] through the anus.

==Structure==

Shamilton

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