Which membrane covers the outer surface of a bone and serves as a site for tendon attachment?

Which membrane covers the outer surface of a bone and serves as a site for tendon attachment?

• A. Diaphysis
• B. Epiphysis
• C. Medullary cavity
• D. Periosteum

Answer: (D)

The periosteum is the membrane that covers the outer surface of a bone (except at joint surfaces). It has a fibrous outer layer and an inner cell-rich layer that contain blood vessels, nerves, and osteogenic cells involved in growth and repair. Tendons attach to bone by integrating with the periosteum through Sharpey's fibers, which anchor into the outer layer and extend into the bone, giving a strong site for tendon attachment. The other terms refer to parts inside or structural aspects of bone: the diaphysis is the shaft, the epiphyses are the ends, and the medullary cavity is the central marrow-containing space.

The periosteum is the membrane that covers the outer surface of a bone (except at joint surfaces). It has a fibrous outer layer and an inner cell-rich layer that contain blood vessels, nerves, and osteogenic cells involved in growth and repair. Tendons attach to bone by integrating with the periosteum through Sharpey's fibers, which anchor into the outer layer and extend into the bone, giving a strong site for tendon attachment. The other terms refer to parts inside or structural aspects of bone: the diaphysis is the shaft, the epiphyses are the ends, and the medullary cavity is the central marrow-containing space.