The Human Body — how you work inside
How does your body actually work? Explore the heart, the brain, your bones, the lungs and your senses — five illustrated topics with true facts. Ages 7–10.
Ages 7–10
What's inside
The Heart — your body’s pump
Your heart is a muscle about the size of your own fist, tucked in the middle of your chest and leaning a little to the left. Its job sounds simple but it is enormous: push blood to every single corner of you. It has been doing that since long before you were born, and it has never once stopped for a break.
The Brain — your control room
Your brain is a soft, wrinkly lump about the size of two fists put together, floating safely inside your skull. It is the control room for absolutely everything you do: reading this, wiggling a toe, remembering your best friend’s laugh. And it is the only machine in the universe that is busy trying to understand itself.
Bones — your living scaffolding
Your skeleton is the frame that holds you up, the armour that protects your softest parts, and the set of levers your muscles pull on. It is easy to imagine bones as dry and dead, like something in a museum, but yours are alive, warm and full of blood. They are growing right now while you read this.
The Lungs — your air machines
Your lungs are two soft, spongy bags in your chest that fill and empty around twenty thousand times a day. Their only job is to swap gases: take in the oxygen you need and let go of the carbon dioxide you do not. You almost never notice them, which is exactly how good they are at it.
Your Senses — how the world gets in
Everything you know about the world arrived through your senses, like messengers running to your brain. Sight, hearing, smell, taste and touch each catch a different kind of signal and turn it into electricity. There is a sixth one nobody counts: the balance sense in your inner ear that stops you toppling over.
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