1. Health Mrs. Wagner

2.  Support your body  Give it shape  Work with muscles so you can move  Bones – store important minerals and release them to the body

3.  Axial Skeleton – bones in your head, your breastbone, your ribs and in your backbone  Appendicular Skeleton – All the other bones in your body

4.  Cranium – thick, hard part of skull that encloses the brain and protects it  Jawbone – only bone in skull that can move  Vertebrae – 33 bones in spinal column – support head and give flexibility to neck and back. Protects spinal cord  Cartilage – tough, supportive tissue that is softer and more flexible than bone – separate individual vertebrae from each other

5.  Arms, hands, feet, legs, hips and shoulders  Joints – point at which two bones come together  Ligaments – strong, fibrous bands hold bones together at moveable joints.  Immovable joints – cannot move –Cranium  Moveable joints - 4 types

6.  1. Hinge – back and forth movement - Knees, elbow 2. Ball and Socket – movement in all directions - Shoulder 3. Pivot – Side to side - neck at vertebrae 4. Gliding – bones to slide over one another - wrists and ankles

7.  206 in body  Marrow – soft tissue inside of the bone – Red blood cells produced  Ossification – body replacing cartilage with bone – born with cartilage – age 20 – 25

8.  Fracture – break in the bone  Dislocation – ends of the bones are forced out of their normal positions in a joint  Sprain – overstretched or torn ligaments or tendons  Torn cartilage – serious damage to the cartilage that covers the ends of bones in a joint  Bursitis – painful irritation of the fluid-filled sac that cushions certain joints  Arthritis – joints become painful and swollen

9.  Scoliosis – abnormal curvature of the spine – more common in girls – twists sideways  Osteoporosis – bones become weak and break easily due to a loss of calcium