B2f Gas exchange humans
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How your lungs work
Information on lungs and breathing from How Stuff Works
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Lung labelling
Diagram to label lung structures.
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Smoking and its effect on the breathing system
From Schoolscience site, notes, diagrams, an animation and a matching quiz.
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Smoking body
Compare different parts of the body in a smoker and a non-smoker.
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Structure of the lungs
Video clip from BBC Bitesize.