Bone Histology

Concentric lamellae

Circular layers of bone matrix that surround the central canal?

Canaliculi

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

Perichondrium

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Trabeculae

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Bone (osseous)

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Spongy (cancellous) tissue

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Interstitial lamellae

Incomplete lamellae lying in between intact osteons . These fill the gaps between osteons or are remnants of bone remodeling.

Osteocytes

Major, mature bone cells derived from osteoblasts that become buried in bone after it is formed. Function to maintain the matrix.

Perforating (Volkman's) cannals or channels

Run perpendicular to the central canals. They help connect the blood vessels and nerves that pass through the central canals.

Lacunae

Small spaces between the lamellae which contain osteocytes

Central canal

The hollow center of an osteon, also known as a Haversian canal. The central canal contains blood vessels, lymphatic vessels, lymphatic vessels, and nerves. Bone is laid down around the central canal in concentric rings called lamellae.

Osteon

The unit of combact bone, also called a Haversian system. Osteons are essentially long cylinders of bone; the hollow center is called the central canal, and is where blood vessels, nervs, and lymphatic vessels are found. Compact bone is laid down around the central canal in rings (lamellae).