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.
Thirty, forty or even fifty thousand spectators from all sections of Roman society flocked to be entertained by gory spectacles where wild and exotic animals were hunted, prisoners were executed, religious martyrs were thrown to the lions and the stars of the show, symbols of the Roman virtues of honour and courage, the gladiators, employed all their martial skills in a kill or be killed contest.