Support Storage (in particular Calcium) Blood cell production in red marrow Protection Leverage
Bones: AKA Osseous Tissue Long Bone Longer than wide Ex: Limb Bones
Short Bone Length = width Ex: Wrist/Ankle
Flat bones Thin and broad Ex: Skull, Ribs
Irregular bone Complex shapes Ex: Vertebrae
Diaphysis—central shaft of long bone Contains bone marrow Epiphysis—ends of long bone Covered with cartilage Forms joints with other bones
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
Osteon—basic unit of compact bone Central canal—contains blood vessels Perforating canal—passageways between central canal and rest of bone
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