Hard outer layer of a bone, protecting the bone and the spongey layer, as well as bone marrow.
1
Short and irregular bones have no medullary canal, only a thin shell of dense bone filled with cancellous tissue.
2
A woman with dense bones will be able to lose some density without developing osteoporosis.
3
Our less dense bones, such as our spine and the ends of our long bones, turn over every two to three years.