Anatomy of Compact Bone

concentric lamellae

calcified ECM part of osteon

osteon

tube-shaped unit that consists of concentric layers of bone lamellae surrounding a central canal

Haversian system

another name for osteon

central canal

canal that runs through the core of each osteon with its own blood vessels and nerve fibers

Haversian canal

another name for the central canal

perforating canals

lie at right angles to the central canals and connect the blood/nerve supply of the periosteum to the central canal and marrow cavity

Volkmann’s canal

another name for perforating canals

osteocytes

mature bone cells with two components: lacunae and canaliculi

canaliculi

thin tubes that osteocyte legs occupy

interstitial lamellae

remains of old osteons that have been cut through by bone remodeling

circumferential lamellae

cover the entire circumference of the bone

collagen in lamella

run in different directions to provide strength and allow it to resist twisting forces