The hard outer part of bones

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asked Jul 4, 2021 21.8k views

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James Radford · Answer 1 · 2021-07-06T18:33:40+0000

The outer surface of bone is called the periosteum (say: pare-ee-OSS-tee-um). It's a thin, dense membrane that contains nerves and blood vessels that nourish the bone. The next layer is made up of compact bone. This part is smooth and very hard.

The hard outer part of bones

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