Respuesta :
The canal that runs through the core of each osteon (Haversian system) contains Blood vessel and fibres
What is osteon?
Osteons are cylindrical vascular tunnels formed by an osteoclast-rich tissue. They contain pluripotential precursor cells and endosteum known as the cutting cone. The bone removed by the cutting cone is replaced by osteoblast-rich tissue. This is known as the closing cone, which forms concentric layers of lamellar bone that surround the vascular Haversian canal. Volkmann canals also contain nutritional vessels arising from the periosteal and endosteal bone surface, which connect with the Haversian vessels within the osteons.6 The size of the osteonal transport system is 100 µm, which limits the width of an osteon to approximately 200 µm. The mean width of a lamella is 3–7 µm
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