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osteoblasts large, granular cells, can't undergo mitosis, found on surface of bone form bone, secrete the osteoid: collagen, proteoglycans, glycoproteins. Osteoblast are cuboidal mononuclear bone cells 15-30 Âµm in length, which form a contiguous monolayer over the surface of bone. They are derived from marrow stromal cells by differentiation of pre-osteoblasts and not themselves undergo mitosis.
Place theses steps in the correct order: (1) bony matrix fuses to form trabeculae. (2) clusters of osteoblasts forma center of ossification taht secretes organic extracellular matrix. (3) spongy bone is replaced by compact bone on the bone&#39;s surface. (4) periosteum develops on the bone&#39;s...