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Anus
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==Key Stage 3==
===Meaning===
[[File:Anus.png|right|300px|thumb|A computer generated image showing the [[Small Intestine|small intestine]], [[Large Intestine|large intestine]], [[rectum ]] and [[anus]].]]
The [[anus]] is a ring of [[muscle]] at the end of the [[Digestive System|digestive system]] that holds tight until [[faeces]] is ready to be released.