| A | B |
|---|
| Skeletal System | made up of 206 bones, forms the skeleton |
| Long bones | found in our arms and legs, consist of a shaft and two rounded ends |
| Short Bones | round or cube shaped, found in wrists and ankles |
| Flat Bones | thin and may be curved; ribs, skull bones |
| Irregular Bones | oddly shaped bones, spinal column and face |
| Bones | support and protect the body, made u of a hard and solid outside and a sponge like and airy inside. |
| Joint | where two bones join together. |
| Fixed joints | Permit no movement; skull bones for example |
| slightly movable joints | allow for limited movement; found between vertebrae. |
| Freely Moveable Joints | allows for a wide range of movement; knees, elbows, fingers, etc. |
| Cartilage | tough fibrous substance filling the space between teh bones of a slightly moveable joint. |
| Ligaments | strong bands of fibrous tissue, crosses over the joint capsule attaching one bone to another to stabilize the joint. |
| Tendons | skeletal muscles are attached to bones by bands of this connective tissue |
| Functions of the Musculoskeletal System | Protect, support, movement,heat protection, calcium storage, production of blood cells. |
| Calcium | an important mineral necessary for the skeletal and cardiak msucle to function. |
| atrophy | loss of muscle size ans strength |
| Osteoporosis | excessive loss of bone tissue |
| Arthritis | inflammation of the joints causing pain and stiffness |
| Osteoarthritis | leading cause of physical disability in elderly; cartilage at ends of the bones is worn away, making movement of the joints difficult and painful |
| Rheumatoid Arthritis | causes severe joint deformities; an autoimmune disorder. |
| Gout | a type of arthritis caused by a disturbance in the body's metabolism. |
