Page 281 - Atlas of Histology with Functional Correlations
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FIGURE 7.28 ■ Dry, compact bone: ground, transverse section. Low
magnification.
FIGURE 7.29 | Compact Bone, Dried
(Longitudinal Section)
This figure represents a small area of a dried compact bone, ground in a
longitudinal plane. Because central canals (1, 9) course longitudinally, each
central canal is seen as a vertical tube that shows branching. Central canals (1, 9)
are surrounded by lamellae (2, 6) with lacunae (4) and radiating canaliculi (5).
The lamellae (2, 6), lacunae (4), and the osteon boundaries, the cement lines (3,
8), course parallel to the central canals (1, 9) in the compact bone.
Other canals that extend in either a transverse or oblique direction are the
perforating (Volkmann) canals (7). Perforating canals (7) join the central
canals (1, 9) of osteons with the marrow cavity. The perforating canals (7) do not
have concentric lamellae. Instead, they penetrate directly through the lamellae
(2, 6).
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