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Tommy’s back in the operating theatre again! This time, he has put an earthworm in his nose! The little critter has attached itself somewhere to Tommy’s circulatory system – can you find it?

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Interesting fact:

If all your blood vessels were laid out in a line, they would add up to almost 100,000 kilometres – enough to wrap around the earth more than twice. In a lifetime, they transport 160 million litres of blood through your body.

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