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[os-tee-uh-blast] /ˈɒs ti əˌblæst/

noun, Anatomy.
a bone-forming cell.
a bone-forming cell

osteoblast os·te·o·blast (ŏs’tē-ə-blāst’)
A cell from which bone develops; a bone-forming cell.
os’te·o·blas’tic adj.
A specialized bone cell that produces and deposits the matrix that is needed for the development of new bone and consists primarily of collagen fibers. Osteoblasts are formed from osteoclasts on the outer surfaces of bone and in bone cavities, and bone deposition takes place constantly in living bone. As new bone grows and hardens with the addition of calcium and phosphate, osteoblasts become embedded in the bone matrix and develop into osteocytes.


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  • Osteoblastoma

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  • Osteocartilaginous

    osteocartilaginous os·te·o·car·ti·lag·i·nous (ŏs’tē-ō-kär’tl-āj’ə-nəs) adj. Relating to or composed of bone and cartilage.

  • Osteochondritis

    [os-tee-oh-kon-drahy-tis] /ˌɒs ti oʊ kɒnˈdraɪ tɪs/ noun, Pathology. 1. inflammation of bone and cartilage. osteochondritis os·te·o·chon·dri·tis (ŏs’tē-ō-kŏn-drī’tĭs) n. Inflammation of a bone along with its cartilage.

  • Osteochondritis deformans juvenilis

    osteochondritis deformans juvenilis osteochondritis de·for·mans ju·ve·ni·lis (dē-fôr’mānz’ jōō’və-nī’lĭs) n. Osteochondrosis of the upper end of the femur. Also called Calvé-Perthes disease, coxa plana, Legg-Calvé-Perthes disease, Perthes disease.

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