What is the periosteum?

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Multiple Choice

What is the periosteum?

Explanation:
The periosteum is the membrane that covers the outer surface of bone. It has two layers: a tough fibrous outer layer and an inner osteogenic (cambial) layer that contains progenitor cells capable of becoming osteoblasts. This inner layer enables growth in bone diameter (appositional growth) and plays a key role in fracture repair. The periosteum is highly vascular and innervated, and it anchors to the bone with Sharpey's fibers. It does not line the medullary cavity (that’s the endosteum), nor is it the cartilage at the ends of long bones during development (the growth plate), and it does not dissolve bone (bone resorption is done by osteoclasts).

The periosteum is the membrane that covers the outer surface of bone. It has two layers: a tough fibrous outer layer and an inner osteogenic (cambial) layer that contains progenitor cells capable of becoming osteoblasts. This inner layer enables growth in bone diameter (appositional growth) and plays a key role in fracture repair. The periosteum is highly vascular and innervated, and it anchors to the bone with Sharpey's fibers. It does not line the medullary cavity (that’s the endosteum), nor is it the cartilage at the ends of long bones during development (the growth plate), and it does not dissolve bone (bone resorption is done by osteoclasts).

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