Sharpey's fibers anchor the periosteum to the bone and serve as anchoring points for tendons and ligaments. Which membrane contains these fibers?

Sharpey's fibers anchor the periosteum to the bone and serve as anchoring points for tendons and ligaments. Which membrane contains these fibers?

• A. Periosteum
• B. Endosteum
• C. Perichondrium
• D. Epimysium

Answer: (A)

Sharpey's fibers are bundles of collagen fibers that extend from the outer covering of bone into the underlying bone matrix, anchoring the periosteum to the bone and providing strong attachment sites for tendons and ligaments. This makes the membrane that contains these fibers the periosteum, which covers the outer surface of all bones. The endosteum lines the inner surfaces of bone, the perichondrium surrounds cartilage, and the epimysium surrounds muscle—none of these contain Sharpey's fibers.

Sharpey's fibers are bundles of collagen fibers that extend from the outer covering of bone into the underlying bone matrix, anchoring the periosteum to the bone and providing strong attachment sites for tendons and ligaments. This makes the membrane that contains these fibers the periosteum, which covers the outer surface of all bones. The endosteum lines the inner surfaces of bone, the perichondrium surrounds cartilage, and the epimysium surrounds muscle—none of these contain Sharpey's fibers.