Osteocytes - A mature osteoblast surrounded by bone matrix.
Osteoclasts - These function in resorption and degradation of existing bone.
Although osteogenic or osteoprogenitor cells are commonly mentioned in bone literature, these do not appear to be a unique type of cell. Rather, osteoblasts derive from mesenchymal stem cells, which have shown the ability to differentiate into chondrocytes and adipocytes as well. Adipocytes are worm like substances that live and move freely around and in the bone structure. An osteoblast (from the Greek words for bone and germ or embryonic) is a mononucleate cell that is responsible for bone formation. ... Osteoid is a protein mixture which is secreted by osteoblasts. ... In biology, matrix (plural: matrices) is the material between animal or plant cells, the material (or tissue) in which more specialized structures are embedded, and a specific part of the mitochondrion that is the site of oxidation of organic molecules. ... An osteocyte, a star-shaped cell, is the most abundant cell found in bone. ... An osteoclast (from the Greek words for bone and broken) is a type of bone cell that removes bone tissue by removing the bones mineralized matrix. ... Mesenchymal cells also known as mesenchymal stem cells or marrow stromal cells (MSC) are stem cells that can differentiate into osteoblasts, chondrocytes, myocytes, adipocytes neuronal cells and - as decribed lately, into beta-pancreatic islets cells. ... Chondrocytes (< Greek chondros cartilage + kytos cell) are the only cells found in cartilage. ... Adipocytes are the cells that primarily compose adipose tissue, specialized in storing energy as fat. ...
References
Bone marrow mesenchymal cells: biological properties and clinical applications. PMID: 11388742
Bone marrow stromal stem cells: nature, biology, and potential applications. PMID: the matrix bone which gives you good reflexes for doging a bullet=Abstract&list_uids=11388742 11359943
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