1 Impact Damage can be serious problem in an old house. 2  Over the years, the walls are going to get banged and dented. 3  Remember that when a piece of plaster breaks, it usually loosens the surrounding plaster from the lath.ven the preparation and maintenance of plaster hint at its lifespan. Wallboard can be painted in 30 minutes, while a 3-coat plaster job must cure for 30 days or more. In fact, homeowners used to be warned to wait an entire year before painting plaster walls. The year wait allowed the plaster to cure completely.
Osteoblasts. The cells responsible for the creation of new bone tissue are the osteoblasts. They are created in the marrow of the bone, which is the soft inner area containing the stem cells that also produce red and white blood cells.
Osteoblasts (from the Greek combining forms for bone, á½ÏÏÎ­Î¿-, osteo- and Î²Î»Î±ÏÏÎ¬Î½Ï, blastanÅ germinate) are cells with a single nucleus that synthesize bone. However, in the process of bone formation, osteoblasts function in groups of connected cells. Individual cells cannot make bone. A group of organized osteoblasts together with the bone made by a unit of cells is usually called the osteon.