ABSTRACT
This chapter deals with the histology and the cytology of that kind of the mineralized connective tissues which is called bone. The morphology of bone is a result of some sort of a balance between the numbers of cells and the various functional roles. Osteoblasts are the cells forming the organic bone matrix during growth, remodeling, and repair processes. In an active osteoclast, the outer part of the cell-surface adjacent to the bone, shows a tight contact with it through the electron microscope. The endosteum usually is a thin layer of connective tissue containing a few cells lining the inner surface of bones: the compacta of long bones or the spongy bone. Compact bone which, as an example, is found in the shaft of the long bones, is composed of lamellae which are luted together, thus resembling the structure of plywood.
