Category: O

  • Otitis

    Inflammation of the inner or outer parts of the ear. A bacterial infection of the ear canal. Usually caused from swimming. Symptoms include inflammation of the ear canal. Inflammation of the ear, either otitis externa, otitis media, or otitis interna (labyrinthitis). Inflammation of the ear. Otitis externa is inflammation of the canal joining the eardrum…

  • Otic placode

    A thickening of the ectoderm on the outer surface of a developing embryo from which the ear develops.  

  • Otalgia

    Earache, pain in the ear. Pain in the ear. Apart from local causes it may be due to a lesion of the geniculate ganglion of the facial nerve (geniculate otalgia) or to herpes zoster affecting the facial nerve (Ramsay Hunt syndrome).  

  • Osteosacrcoma

    A malignant bone tumour. Also called osteogenic sarcoma.  

  • Osteoprotegerin

    Also called osteoclastogenesis inhibitory factor (OCIF), a cytokine, which can inhibit the production of osteoclasts.  

  • Osteomyelofibrosis

    A myeloproliferative disorder in which fibrosis and sclerosis finally lead to bone marrow obliteration.  

  • Osteomalacia

    Refers to the softening of the bones due to defective bone mineralization. The adult equivalent of rickets; a bone disorder due to deficiency of vitamin D, leading to inadequate absorption of calcium and loss of calcium from the bones. A condition characterized by resorption of calcium from bones and resulting from a deficiency of vitamin…

  • Osteodynia

    Ostealgia; pain in the bone.    

  • Osteoclastogenesis

    The production of osteoclasts.  

  • Osteoclasts

    A kind of bone cell that removes bone tissue by removing its mineralized matrix. Bone cells that cause the resorption of bone tissue (bone-destroying cells). A cell which destroys bone. A surgical instrument for breaking bones. Cells responsible for bone remodeling. These cells mobilize bone mineral. A large multinucleated cell that is derived from macrophages.…