Gastrointestinal: Adjective referring collectively to the stomach and small and large intestines. The commonly used abbreviation for gastrointestinal is GI. (Outside of medicine, GI can also stand for galvanized iron, general issue or government issue-as in GI Joe).
Before the extracellular matrix is calcified, the tissue is called osteoid (bone-like) tissue. When the concentrations of calcium and phosphate ions rise high enough, they are deposited into the extracellular matrix, and the bone calcifies.
What is mastoid surgery? The mastoid bone, part of the skull, lies right behind the ear lobe. Sometimes the cells of the mastoid bone, and/or the small bones (ossicles) inside the ear, are destroyed by chronic infection or a growth (cholesteatoma).When this happens, the affected mastoid cells may need to be removed (mastoidectomy).ometimes the cells of the mastoid bone, and/or the small bones (ossicles) inside the ear, are destroyed by chronic infection or a growth (cholesteatoma). When this happens, the affected mastoid cells may need to be removed (mastoidectomy).