| A | B |
|---|
| skeletal muscles | Muscles that are attached to the bones by strong tendons. |
| smooth muscles | Muscles that make up the organs inside your body. |
| cardiac muscle | Muscle that is found only in the heart. |
| voluntary muscle | Muscle movements we can control |
| involuntary muscle | Muscles you cannot control; they work automatically. |
| food and oxygen | What muscles need to work properly. |
| kidney | This organ is a smooth muscle. |
| smile | A voluntary muscle movement. |
| tendons | Skeletal muscles are attached to the bones with_______. |
| pairs | Muscles work in_______. |
| contract | What a muscle does to pull a bone. |
| more than 600 | The number of muscles in the human body. |
| stomach digesting food | An involuntary muscle movement. |
| hamstring | This muscle is a skeletal muscle. |
| nerves | Pathways that take messages to and from the brain to the muscles. |
| exercising | Makes your muscles stronger; does not give you more muscles. |
