Inside your body

Follow blood, breath and food, then explore filtration and support.

Choose any question to begin.

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1. 1

   Where does blood travel next?

   Follow the two linked loops through the heart, lungs and body.

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2. 2

   How do gases cross between air and blood?

   Compare oxygen entering blood with carbon dioxide leaving it.

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3. 3

   How does food become nutrients the body can use?

   Trace food along the gut and nutrients into circulation.

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4. 4

   What stays in blood, and what becomes urine?

   Follow a filter, a return route and the fluid left behind.

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5. 5

   How can bones support and protect the body?

   Compare a protective shell, a rib cage and a supporting long bone.

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Each discovery includes all five reading levels. Journey progress reflects the checkpoints answered on this browser.

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