Osteoblasts: matrix-synthesizing cell, responsible for bone growth, main bone-building cells, secrete collagen fibers and other organic components needed to build bones, are trapped by their own matrix and become osteocytes, Osteocytes: mature bone cell in matrix, principle cells of bone tissue, most abundant, no longer active in bone synthesis but remains metabolically active and also maintains the bone, such as its exchange of nutrients, waste, and calcium with the blood, Osteoclasts: bone-resorbing cell (catabolizing), giant cells with many nuclei, derived from circulating monocytes (a type of white blood cell), functions in the destruction of bone matrix, which is important in development, growth, and repair of bones, Osteogenic cells (Stem cells): only bone cells that divide, differentiate and develop into osteoblasts, also called osteoprogenitor,

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