The alveolar process contains a region of compact bone adjacent to the periodontal ligament ( PDL ), which is called the lamina dura when viewed on radiographs.
12.
These bones are composed of two thin layers of compact bone enclosing between them a variable quantity of cancellous bone, which is the location of red bone marrow.
13.
The sternum is composed of highly vascular tissue, covered by a thin layer of compact bone which is thickest in the manubrium between the articular facets for the clavicles.
14.
Additionally, the outer shell of the long bone is compact bone, then a deeper layer of cancellous bone ( spongy bone ) which contains in the medullary cavity the bone marrow.
15.
I would start with an description of the bones spongy bones, compact bones, and the bone cells, especially the bone-building cells, the osteoblasts and the bone-sculpturing cells the osteoclasts and their parents the osteogenic cells.
16.
Although the alveolar bone proper is composed of compact bone, it may be called the cribriform plate because it contains numerous holes where Volkmann canals pass from the alveolar bone into the PDL . The alveolar bone proper is also called bundle bone because Sharpey fibers, a part of the fibers of the PDL, are inserted here.
