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Three ways to ask the same question (for a 7-year-old):

  • 1. What holds my bones together?
  • 2. How do bones stay joined?
  • 3. What keeps my bones from falling apart?

Simple explanation — step by step:

  1. Bones meet at places called joints. A joint is where two bones come together, like your knee or elbow.
  2. Strong bands called ligaments hold the bones together. Ligaments are like stretchy ropes that keep the bones from moving the wrong way.
  3. Soft cushions called cartilage protect the ends of bones. Cartilage stops the bones from rubbing and makes movement smooth, like a little pillow between them.
  4. Muscles and tendons help move and steady the bones. Tendons attach muscles to bones. When muscles pull, tendons pull the bones so you can swing your arm or kick a ball.

Quick example: In your knee, ligaments hold the bones together, cartilage cushions them, and muscles/tendons move and steady the knee.

If you want, try this: gently bend and straighten your elbow. That moving place is a joint — ligaments, cartilage and muscles are all helping it work!


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