T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
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The spine is made up of 24 bones, called vertebrae, that surround the spinal cord. These irregularly shaped bones have a thin cortical shell which surrounds spongy (cancellous or trabecular) bone (#1 and #2).
Spongy bone is formed by an anatomosing network of trabeculae that form interconnecting spaces containing bone marrow.