• The smallest bones in the body are found in the ear.
• The longest bone in the body is the femur.
• The bones are filled with a fatty substance called bone marrow. In this marrow, red and white blood cells are manufactured and then released into the bloodstream.
• Over half the body's bones are in the hands and feet.
• The only jointless bone in your body is the hyoid bone in your throat.
• As your bones grow, you get taller (of course). Your growth in height is likely to stop by the time you are 16 if you're a girl and 18 if you're a boy.

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