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Muscular System

Delve into the workings of the muscular system, learn about muscle types – smooth, skeletal, cardiac – and how they function. Discover fun trivia questions like how many muscles are used in activities such as smiling, frowning, writing, and swimming. Find out about the strongest muscle – the heart – and how exercise impacts and strengthens muscles. Uncover the importance of tearing muscle fibers for muscle growth and how different muscles in the body function and develop.

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Muscular System

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  1. Muscular System How They Work Muscle Types Injuries

  2. Trivia Question • How many muscles are used during the following activities?

  3. Smiling Guesses?????

  4. Smiling Answer: 17

  5. Frowning Guesses????

  6. Frowning Answer: 41

  7. Writing Guesses???

  8. Writing Answer: ~30

  9. Swimming Guesses???

  10. Swimming 213

  11. Muscular System • Group of tough tissues that make your body parts move. • “The engine to your body.”

  12. What Are Muscles Made Of? • Thousands of muscle fibers. • Thickness of a strand of hair. • Tightly bound together in bundles.

  13. Types of Muscles • Smooth • Skeletal • Cardiac

  14. Smooth Muscles • You DON’T control these muscles (Stomach, Intestines) • Swallow food and smooth muscles move it through digestive system (“They make it smooth.”)

  15. Skeletal Muscles • Work with bones to allow you to move. (You DO control these). • Attached to bones. • Make up about 40% of body weight

  16. Cardiac Muscle • Special type of muscle only found in heart. (DON’T control) • Controlled by brain. • Contracts and relaxes to pump blood.

  17. Strongest Muscle

  18. The Heart (Cardiac Muscle) • How do we strengthen our heart?

  19. Strengthening the Heart • Exercise!!!!! • You increase your heart rate which forces your heart to work harder by pumping out more blood. • This is a “workout” for your heart!

  20. What Does Exercise Do To Your Muscles??

  21. Exercise’s Affect on Muscles • It tears the muscle fibers of your body. • Your muscles are strengthened in the rebuilding process of those small tears. • If you don’t tear your muscles, you won’t get stronger!!! • Exceptions are……

  22. Muscles of the Body • Take out your pink diagram….

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