resurrection plant. noun. 1. any of several unrelated desert plants that form a tight ball when dry and unfold and bloom when moistened. The best-known examples are the crucifer Anastatica hierochuntica (also called rose of Jericho), club mosses of the genus Selaginella, and the composite Asteriscus pygmoeus.
Periosteum is a membrane that lines the outer surface of all bones, except at the joints of long bones. Endosteum lines the inner surface of all bones. Periosteum connsists ofâ¦ dense irregular connective tissue. Periosteum is divided into an outer fibrous layer and inner cambium layer (or osteogenic layer). The fibrous layer contains fibroblasts, while the cambium layer contains progenitor cells that develop into osteoblasts. These osteoblasts are responsible for increasing the width of a long bone and the overall size of the other bone types.
1 Osteoblasts. 2  Cells that are derived from osteoprogenitor cells and are responsible for the synthesis of the organic components of bone matrix, which is called osteoid. 3  They are located on the surface of bone tissue and resemble epithelium. Endosteum: Thin layer of osteoprogenitor cells, osteoblasts and a small amount of connective tissue that lines all internal surfaces of cavities within bone including the osteonic canals and marrow spaces. 2  Bone Matrix. 3  Mature bone is made up of approximately 70% inorganic salts and 30% organic matrix by weight.