| A | B |
|---|
| Bone | Provides body shape, forms blood and protects internal organs |
| Periosteum | Living membrane on the outside of a bone filled with blood vessels to carry food and oxygen. |
| Spongy bone | Contains many openings and is found towards the end of bones yet is hard. |
| Compact bone | Thick outer layer that stored calcium and phosphorus and contains elastic fibers. |
| Bone marrow | Appears in spaces of spongy bone and center of bone where blood is made. |
| Red marrow | Active marrow makes new blood cells found in spongy bone. |
| Yellow marrow | Made mostly of fat and is found in the long part of bones |
| Cartilage | Soft flexible material that is part of skeleton and reduces friction between bones. |
| Joints | Places in the skeleton where two or more bones join together. |
| Ligament | Hold bones together with strong bands of tissue |
| Fluid | Small pouches containing a liquid to lubricate joints |
| Tendon | Strong elastic band of tissue that connects muscles to bone. |
| Hinge joint | Moves back and forth |
| Pivot joint | Allow the movement of rotation or twisting |
| Immovable joints | No range of motion at all. |
| Gliding joints | Joint where bones slides over another bone |
| Ball and socket joint | Large round bone fits in hollow of another bone. |
| Skeletal muscles | Muscle that move bones |
| Cardiac muscles | Muscles that pumps blood through the heart and force blood through the rest of body, involuntary. |
| Smooth muscles | Found in many places inside your body, involuntary. |
