__________ are a series of microscopic tubes in the outermost region of bone called cortical bone that allow blood vessels and nerves to travel through them.
A
Bone marrow
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B
Haversian canals
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C
Marrow cavity
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D
Lacunae
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Solution
The correct option is BHaversian canals Haversian canals are a series of microscopic tubes in the outermost region of bone called cortical bone that allow blood vessels and nerves to travel through them. Osteoblasts and osteoclasts are types of cells the human body uses to repair broken bones. Osteoclasts break down old bone tissue allowing osteoblasts to replace it with new material. Together, these cells facilitate bone mending and bone growth. Osteocyte is a bone cell, formed when an osteoblast becomes embedded in the material it has secreted.