1. Ch 3 The Skeletal System

2. Overview  Bones>  Bones> oss/e, oss/I, oste/o, ost/o: Act as the framework for the body, protect the internal organs, and store the mineral calcium.  Bone Marrow>  Bone Marrow> myel/o: Forms some blood cells.  Cartilage>  Cartilage> chondr/o: Creates a smooth surface for motion within the joints and protects the ends of the bones.  Joints>  Joints> arthr/o: Work with the muscles to make a variety of motions possible.

3. Tissues of a Bone:  Periosteum: The tough, fibrous tissue that forms the outermost covering of the bone.  Compact Bone: The hard, dense, and very strong bone that forms the outer layer of the bones.  Spongy Bones: Lighter and not as strong as compact bone, it is commonly found in the ends and inner portions of long bones such as the femur. Red bone marrow is located within this spongy bone.  Medullary Cavity: Located in the shaft of a long bone. It is lined with endosteum and contains yellow bone marrow.

4. Review of Skull Bones

5. Ch 3 Terms  arthr/o> body joint  chondro/o> cartilage  cost/o> rib  crani/o> skull  kypho/o> bent, hump  lord/o> curve, swayback, bent  myel/o> muscle  oss/e, oss/I, ost/o, oste/o> bone  -desis surgical fixation of bone or joint, to bind, tie together  –lysis breakdown, separation, setting free, destruction, loosening

6. Words  Arthrosclerosis> stiffness of the joints, especially in the elderly  Osteochondroma> the most common benign bone tumor  Costals> 12 pairs of ribs  Cranium> the portion of the skull that encloses the brain  Kyphosis> abnormal curvature of the spine AKA: humpback  Lordosis> abnormal curvature of the spine AKA: swayback  Myeloma> malignant tumor  Osteoarthritis> a form of arthritis commonly associated with aging AKA: wear and tear arthritis  Arthrodesis> surgical stiffening of a joint or joining of spinal vertebrae AKA: fusion  Arthrolysis> surgical loosening of a joint