(spongy bone lined on either side by a layer of compact bone ( link ). Bones are organs composed of hard living tissue providing structural support to the body its scaffolding. Each osteon is composed of concentric rings of calcified matrix called lamellae (singular lamella). They are further classified as Axial or Appendicular. This contains both red and yellow bone marrow. Compact Bone Compact bone is the denser, stronger of the two types of bone tissue ( link ).
A Critique of Too Close to the Bone, Brain Structures,
The periosteum covers the entire outer surface except where the epiphyses meet other bones to form joints ( link ). Bone Markings Marking Description Example Articulations Where two bones meet Knee joint Head Prominent rounded surface Head of femur Facet Flat surface Vertebrae Condyle Rounded surface Occipital condyles Projections Raised markings Spinous process of the vertebrae Protuberance Protruding Chin Process Prominence feature Transverse process. These salt crystals form when calcium phosphate and calcium carbonate combine to create hydroxyapatite, which incorporates other inorganic salts like magnesium hydroxide, fluoride, and sulfate as it crystallizes, or calcifies, on the collagen fibers. The hollow region in the diaphysis is called the medullary cavity, which is filled with yellow marrow. The cell responsible for bone resorption, or breakdown, is the osteoclast. Epiphysis: Forms the larger rounded ends of long bones. Trabeculae are similar to osteons in that both have osteocytes in lacunae that lie between calcified lamellae. The outer surface of the bone is covered with a fibrous membrane koyaanisqatsi: A Godfrey Reggio Film called the periosteum (peri - around or surrounding). Describe how bones are nourished and innervated.
It contains osteoblasts (boneforming cells osteoclasts (bonedestroying cells nerve fibers, and blood and lymphatic vessels. Bone absorbing cells called. The wider section at each end of the bone is called the epiphysis (plural epiphyses which is filled with spongy bone. By the end of this section, you will be able to: Identify the anatomical features of a bone. The metaphysis is the area where the diaphysis meets the epiphysis. The ongoing balance between osteoblasts and osteoclasts is responsible for the constant but subtle reshaping of bone. Link describes the bone markings, which are illustrated in ( link ). They become osteocytes, the cells of mature bone, when they get trapped in the matrix.