Page 104 - Veterinary Histology of Domestic Mammals and Birds, 5th Edition

86 Veterinary Histology of Domestic Mammals and Birds

The structural unit of compact lamellar bone is the (Haversian canal) containing mesenchymal connective tis-
VetBooks.ir osteon (Haversian system). Each osteon (diameter 20–100 sue, a small blood vessel (e.g. capillary) and an autonomic
μm) consists of a variable number (5–20) of concentric bone nerve. Individual lamellae (width 4–10 μm) are composed of
lamellae (Figures 3.34 and 3.35) surrounding a central canal collagen fibres arranged in parallel and a mineralised bone

3.35 Transverse section of compact bone of a
long bone including osteons and interstitial
lamellae (dog). Schmorl‘s stain (x50).

3.36 Ground bone: compact bone of a long bone
with osteonal and interstitial lamellae (dog).
Carmine stain (x250).

3.37 Ground bone (dog). High-power view
of the wall of a Haversian system. The osteo-
cytes are oriented parallel to the lamellae.
The cytoplasmic processes of the osteocytes
course transversely in the canaliculi ossei
(x480).

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