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.
Making the world better, one answer at a time. Many animals live in Rome. The Brown Bear and European Lynx, which were thought to be extinct in Italy, have made a comeback. Other animals include Italian Deer, Italian Porcupine, Wild Boars, and over 70 species of birds, including seagulls, starlings, and the Hoopoe Bird.
Construction of the Ancient Roman Colosseum was started by Emperor Vespasian in 70 A.D. After Vespasian's death in 79 A.D. his son Titus completed and inaugurated the Roman Colosseum in 80 A.D. The opening ceremony is documented to have lasted 100 days and between 5000 and 11000 wild animals were killed.he ancient Roman Colosseum was the first free-standing amphitheater. It has an elliptical (oval) plan with a length of 189m (620 feet), height 48m (158 feet) and width 156m (512 feet).