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→Composition of Bone
*Cells:
*Cells:
**'''Osteoblasts''': single layer of mesenchymal cells which synthesize bone extracellular matrix (ECM)
**'''Osteoblasts''': single layer of mesenchymal cells which synthesize bone extracellular matrix (osteoid)
***When active, appear plump and cuboidal, with basophilic cytoplasm
***When active, appear plump and cuboidal, with basophilic cytoplasm
****Cell membranes are rich in alkaline phosphatase (ALP)
****Cell membranes are rich in alkaline phosphatase (ALP)