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.
Cells in the cambium layer of the periosteum express markers for both osteogenic and chondrogenic lineages. Like progenitors and fully differentiated bone and cartilage cells in other locations, these cells also are responsive to regulation by a wide range of growth factors and other proteins.ype IV collagenase, which is a marker for preosteoclast development, has been immunolocalized within the deep and fibrous layers of the periosteum. Osteoclasts are thought to migrate from the more superficial layers of the periosteum, through the deeper layers to the bone surface where they can begin to shape the bone.