| A | B |
|---|
| Diaphysis | shaft of long bone made mostly of compact bone |
| Periosteum | connective tissue covering the diaphysis |
| Epiphysis | ends of the long bone made mostly of spongy bone |
| Articular Cartilage | Cartilage covering the epiphysis |
| Epiphyseal Line | thin line that is reminant of the ephiphyseal plate |
| Epiphyseal Plate | flat plate of hyaline cartilage seen only in young bones where growth occurs |
| Yellow Marrow | found in the medullary cavity primarily as fat storage |
| Medullary | center of long bone where yellow marrow is found in adults |
| Red Marrow | forms red blood cells and found in spongy bones and the epiphyses of some long bones |
| Osteocyte | mature bone cells found in the lacunae |
| Lacunae | tiny cavities found in the lamellae that contain the osteocytes |
| Lamellae | concentric circles of calcified matrix found in an osteon |
| Osteon | system of interconnecting canals in adult bones; also called the Haversian System |
| Canaliculi | tiny canals that radiate from the central canal that supply nutrients to the lacunae |
| Ossification | bone formation |
| Osteoblast | cuboidal, bone forming cells active in bone formation and remodeling |
| Osteoclast | large, multi-nuclied, bone removing cells that remove pre-existing bone |
| Bone remodeling | process of removing and rebuilding bone |
| Bone formation | process where osteoblasts lay down new lamellae |
