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MUSCULAR SYSTEM

MUSCULAR SYSTEM. What does the muscular system do?. Muscular system allows you to move and your muscles give your body shape Works with the skeletal system Do you know how many muscles are found in your body? There are more than 600 muscles in your body

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MUSCULAR SYSTEM

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  1. MUSCULAR SYSTEM

  2. What does the muscular system do? • Muscular system allows you to move and your muscles give your body shape • Works with the skeletal system • Do you know how many muscles are found in your body? • There are more than 600 muscles in your body • Did you know that the number of muscles in your body does not increase but the SIZE of the cell increases instead • If you do not do a lot of exercise with your muscles, your muscles may become smaller and weak

  3. What is a muscle? • An organ that relaxes and contracts to allow your body to move • TWO types: • Voluntary • Arms and legs • Involuntary • Muscles of the heart

  4. Types of muscle tissue • There are 3 types of muscle tissue: • Skeletal = move bones • voluntary • Smooth = move many internal organs like intestines and bladder • involuntary • Cardiac = only in the heart • involuntary

  5. How do we move using our muscles? • Muscles move because there are 2 muscles working together: • One muscle contracts, the other relaxes • Muscles need energy, and when energy is used up, the muscle gets tired and needs to rest Try it! Move your bicep muscle: • CONTRACT: when you bend your arm towards your elbow and the muscle gets larger • RELAX: when you move your arm towards the ground and the muscle flattens To see a video with all of this information: http://kidshealth.org/PageManager.jsp?lic=1&article_set=59302&cat_id=20607

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