Compact Bone Structure

Diaphysis

shaft of a long bone

Epiphysis

End of a long bone

Periosteum

A dense fibrous membrane covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles.

Endosteum

membranous lining of the hollow cavity of the bone

Sharpey's (perforating) fibers

connective tissue fibers that secure the periosteum to the underlying bone

Osteoblasts

bone forming cells

Osteoclasts

Bone-destroying cells

Osteocytes

mature bone cells

Osteoid

unmineralized bone matrix

osteoprogenitor cells

bone stem cells

Hematopoiesis

blood cell formation

Osteon

structural unit of compact bone

Haversian canal

one of a network of tubes running through compact bone that contains blood vessels and nerves

Lamella

weight-bearing, column-like matrix tubes composed mainly of collagen

perforating canals

Perpendicular to the central canal

carry blood vessels into bone and marrow

Lacunae

small cavities in bone that contain osteocytes

Canaliculi

Hairlike canals that connect lacunae to each other and the central canal