Bones support and shape the body and protect delicate internal organs such as the brain, heart and lungs. Most bones also contain bone marrow, where blood cells are made.
At birth a baby's body has about 300 bones, which eventually fuse to
206 adult bones.
When you reach bone maturity, around the age of 25 new bone stops being made but existing bone is constantly remodelled.
by Daphne Lambert
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