Periosteum: Functions & Importance Beyond Bone Protection

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The periosteum is a tough, fibrous connective tissue membrane that covers the outer surface of all bones except at the joints. It is richly supplied with nerves and blood vessels and plays several important roles, including:

- Protects the bone from damage

- Anchors tendons and ligaments to the bone

- Helps to repair damaged bone

- Provides a site for bone growth