Bone Histology

Microscopic structure of bone (along the diaphysis)

Periosteum

Internal to it, lie columns of compact bone, called osteons.
Centrally, within the osteons, run the Haversian (aka central) canals, in parallel.
Volkman's (aka perforating) canals run in perpendicular to them.
These canal systems form channels for the neurovasculature.
The osteon comprises concentric rings of lamellae – the bone connective tissue.
Osteocytes are a mature form of osteoblast (the bone-producing cells) within the bony matrix; they are concentrically arranged in between the circles of lamellae. They lie within lacunae (cavities) that interconnect via canaliculi (which are spindly, like spider legs) and through which the osteocytic cytoplasmic cell processes connect for the transportation of nutrients and waste.
The outer layer forms the cement line.
Interstitial lamella lie in between the osteons, which comprises remnants of partially resorbed osteons.
Sharpey's fibers are collagenous fibers that anchor the periosteum to the outer lamellae.

Endosteum

Location

Histology