Why is it important for osteons (a.k.a., Haversian Systems) to be parallel to the length of the bone? What might happen if these osteons aren't parallel, or they're not a nice, regular, round shape of concentric circles?
Osteons are the units of the compact bone.it's also called as Harvesian system.
Osteons are the cylindrical structures which contains mineral matrix and living osteocytes connected by canaliculi, which transports blood.
Osteon consist Harvesian canal which contains bone's blood vessels and nerve fibers.
Osteons are arranged/aligned in parallel to the bone. It is important that parallel alignment of osteons are parallel to the stress and helps in resisting the bone to fractures and bending.
If the osteons are not regular,nice, round in shape means, it can't get enough blood supply and nerve supply.
And also bone easily prone to get fractures and bends easily.
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