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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Ground section of bone stained with Schmorl's stain to reveal small, open spaces in the bone. The higher contrast allows the fine structure of bone to be seen in excellent detail.
Osteons (#1, #2 and #3)- cylindrical structures that are the structural unit of compact bone. They are arranged parallel to the lines of stress in a bone.
Haversian Lamellae - concentric layers of mineralized matrix that forms most of the osteon.
Lacunae - darkly stained, open spaces in the mineralized matrix that contain an osteocyte.
Canaliculi (#1 and #2) - darkly stained, small channels that connect the lacunae with each other. Osteocytes share nutrients by way of cellular processes that extend thru canaliculi.
Interstitial Lamellae (#1, #2 and #3) - found between osteons and are remnants left from remodeling of bone. The darker appearance of their matrix reflects higher mineralization than in osteons.
Canaliculi - lacunae in interstitial lamellae connect to those in osteons.