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==Key Stage 3==
===Meaning===
[[File:Trachea.png|right|300px200px|thumb|A diagram showing the [[trachea]].]]
The [[trachea]] is a tube connecting the [[mouth]] to the [[Lung|lungs]].
==Key Stage 4==
===Meaning===
[[File:Trachea.png|right|200px|thumb|A diagram showing the [[trachea]].]]
The [[trachea]] is a [[cartilage]] covered tube connecting the [[mouth]] to the [[Lung|lungs]].
===Adaptations of the Trachea===