What is this?
Bones are like the super strong framework inside your body that holds you up and gives you shape. They protect all your important soft organs, like your brain and heart, from bumps and bruises. Bones also work with your muscles to help you move, jump, and play!
Key Parts to Explore
Compact Bone
This is the very hard and dense outer part of the bone that makes it strong.
Spongy Bone
This is the lighter, porous inside of the bone, like a honeycomb, that helps make it strong but not too heavy.
Bone Marrow
This soft, jelly-like material inside some bones helps make new blood cells for your body.
Periosteum
This is a thin, tough membrane that covers the outside of your bones and helps them grow and heal.
Did You Know?
Did you know that your bones are four times stronger than concrete, yet they are also incredibly lightweight?
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