Compact bone

What are osteons and where are they found?

Osteons are the structural units of compact bone.

Key components found in compact bone?

• Osteons

• Haversian canal

• Perforating canals (Volkmann's canals)

• Lacunae

• Canaliculi

• Concentric lamellae

• Circumferential lamellae

• Interstitial lamellae

Haversian (central) canal

The Haversian canal is the central space in osteons that contains blood vessels, nerves, and lymphatic vessels.

the function of perforating (Volkmann's) canals

Perforating canals carry blood vessels, nerves, and lymphatic vessels from the periosteum to the central canals of osteons.

What are lacunae

Lacunae are small spaces within bone tissue that house osteocytes (mature bone cells).

What is the role of canaliculi in compact bone?

Canaliculi are tiny canals that interconnect osteocytes, allowing for communication and nutrient exchange between them.

What are concentric lamellae and their function?

Concentric lamellae are circular plates of bone matrix that surround the central canal of osteons.

What is the function of circumferential lamellae?

Circumferential lamellae are circular plates of bone matrix that encircle the entire bone, with outer lamellae next to the periosteum and inner lamellae next to the endosteum.

What are interstitial lamellae?

Interstitial lamellae are old osteons