2.  Support  Storage (in particular Calcium)  Blood cell production in red marrow  Protection  Leverage

3.  Bones: AKA Osseous Tissue  Long Bone  Longer than wide  Ex: Limb Bones

5.  Short Bone  Length = width  Ex: Wrist/Ankle

7.  Flat bones  Thin and broad  Ex: Skull, Ribs

9.  Irregular bone  Complex shapes  Ex: Vertebrae

11.  Diaphysis—central shaft of long bone  Contains bone marrow  Epiphysis—ends of long bone  Covered with cartilage  Forms joints with other bones

13.  Compact bone—solid  Forms diaphysis  Spongy bone—has many spaces  Forms epiphysis  Periosteum—outer covering of the bone  Endosteum—lines the inside of the bone

15.  Osteon—basic unit of compact bone  Central canal—contains blood vessels  Perforating canal—passageways between central canal and rest of bone

17.  Osteocytes—mature bone cells  Maintain bone structure  Assist in repairs  Osteoclasts—giant cells  Release enzymes to dissolve bone  Regulates calcium in body  Osteoblasts—produce new bone