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Unit 2-Bones/Muscle
Practice bones and muscles
| Question | Answer |
|---|---|
| 5 functions of the skeletal system | It provides shape and support It enables you to move. It protects your internal organs It produces blood cells It stores important materials |
| 2 important minerals that bones contain | calcium and phosphorous |
| 4 parts of a bone | 1. outer membrane - covers and protects the bone 2. compact bone - under the membrane, this layer is hard and dense 3. spongy bone - at the edge of the bone, it is spongy and light 4. bone marrow - inside the spongy layer, it make the bone marrow |
| Joints | Joints are where bones meet. They bend so the body can move. |
| Ball and socket joint | allows for the greatest range of motion. Examples - hips and shoulders |
| Gliding joint | Allows one bone to roll over another Examples - wrists and ankles |
| Pivot joint | Allows one bone to rotate around another Example - neck |
| Hinge joint | Allows you to bend and straighten Examples - elbows and knees |
| Ligament | tissue that connects bones to other bones |
| Tendon | tissue the connects muscles to bones |
| Cartilage | tissue that sits between bones so they don't rub into each other |
| Smooth muscle | Involuntary muscle, it lines many of our organs like the stomach and intestines |
| Cardiac muscle | Muscle that is only found in the heart, it is involuntary and never gets tired |
| Skeletal muscle | Voluntary muscles, these are the muscles that attach to bone to move our skeleton |
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