INNERSPACE IMAGING / SCIENCE PHOTO LIBRARY INNERSPACE IMAGING / SCIENCE PHOTO LIBRARY
Compact bone. Light micrograph of a section through human compact bone. This type of bone is found in the bone walls. It forms concentric layers (lamellae, grey) around Haversian canals (yellow and black), which contain blood, lymph vessels and nerves. The lamellae and canals together form a Haversian system. Many Haversian systems are arranged in columns running parallel to the long axis of the bone. Osteocytes, the cells responsible for the maintenance of the bony matrix, are housed in spaces known as lacunae (black ovals). They link by projections of their cytoplasm held in tiny channels called canaliculi. Magnification: x126 at 6x7cm size x63 at 35mm size.
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