| A | B |
|---|
| periosteum | The tough tight fitting membrane that covers your bones. |
| joint | A place where two bones meet. |
| synovial fluid | Joint juice that lubricates your joints. |
| spongy bone | This type of bone has holes that make it lightweight. |
| pivot joint | A joint that allows you to turn your head. |
| skeletal system | This supplies support for your body and protects your internal organs. |
| tendon | This tissue connects muscles to bones. |
| immovable joint | A joint that allows little or no motion. |
| gliding joint | In this type of joint one bone slides across another. |
| compact bone | The outermost hard layer of bone. |
| ligament | This tough tissue connects two bones together. |
| movable joint | A joint that allows wide range of motion. |
| ball and socket joint | Your shoulders and hips are examples of this type of joint. |
| bone marrow | This soft tissue is found in cavities of bones. |
| cartilage | This tissue cushions your bones and reduces friction. |
| hinge joint | This joint allows back and forth movement (ex.elbow). |
| osteoblasts | Cells that deposit calcium and phosphorous and make bones hard. |
| osteoclasts | Cells that break down bone and release calcium and phosphorus in the blood stream. |
