| Term 
 | Definition 
 
        | blood cell production- the red marrow produces both red and white blood cells |  | 
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        | Term 
 | Definition 
 
        | these cells are derived from mesenchyme, differentiate into osteoblasts.  These cells are the "stem cells" for bone; they have the ability to differentiate into adipose cells, chondroblasts, and fibroblasts and can modify their physical and physiological characteristics in response to specific stimuli. |  | 
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        | Term 
 | Definition 
 
        | this tissue has a matrix containing inorganic salts and organic fibers.  The inorganic matrix gives the rigidity and hardness to bone and is composed of a combination of calcium and phosphorus salts.  The organic collagen fibers give this tissue its tensile strength and resistance to strength. |  | 
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        | Term 
 | Definition 
 
        | bone forming cells which actively produce bone tissue; are responsible for calcification of the matrix. |  | 
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        | Term 
 | Definition 
 
        | mature bone cells which are responsible for maintaining the bone matrix.  They can synthesize and resorb the matrix to maintain homeostasis. |  | 
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        | Term 
 | Definition 
 
        | each osteocyte occupies one of these spaces; this space conforms to the shape of the cells surrounded by matrix secreted when the cells was an osteoblast. |  | 
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        | Term 
 | Definition 
 
        | osteocytes extend processed through these which connect to neighboring cells by means of a gap junction. |  | 
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        | Term 
 | Definition 
 
        | "compact" bone- made of dense regular arrangements of osteons.  This type of bone is found in the diaphysis of long bones and as the outer layer of all bones. |  | 
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        | Term 
 | Definition 
 
        | "spongy" bone- a network of thin, connecting spicules which form a meshwork in the interior of bones.  This type of bone has an irregular pattern containing spaces within the bone. |  | 
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        | Term 
 | Definition 
 
        | bone reabsorbing cells derived from monocytes |  | 
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