Heart and Circulation
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How your heart works
Article from How Stuff works – go through the pages to find all sorts of useful stuff – including little animations on electrical system etc.
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Label the heart quiz
Diagram of the heart to label against the clock.
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Oxygen dissociation revision video
Youtube clip – A level revision of oxygen dissociation curves set to music.
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Oxygen transport
Youtube animation describes oxygen transport and haemoglobin.
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Oxygen, blood and the body
Background reading article from Open University on haemoglobin and myoglobin.
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Spotlight on Heart Disease
In depth article on Heart Disease from Nature site.