1. Muscular System Function Along with the skeletal system, muscles provide movement for all the body’s parts. Muscles also allow for internal movement of body organs that have no bones.

2. 3 Types of Muscles Smooth -involuntary Cardiac -involuntary Skeletal -voluntary Involuntary– Muscles that move under the direction of the nervous system and various chemicals in the body; Contract and relax rhythmically without the conscious control of the brain; work automatically Voluntary– Muscles that move under conscious will; you control them

3. Smooth Muscles Muscles found in various organs, such as the esophagus small intestine and stomach

4. Cardiac Muscles Muscles only found in the heart; heart beat They contract and relax about 70 times a minute without ever stopping or getting tired.

5. Skeletal Muscles Muscles that pull on bones to move them. Strong fibers called tendons connect skeletal muscle to bones. Example: walking, playing an instrument

6. Good Morning! Ple ase take out and finish the Concept Check: Muscles in the Body.

7. How Muscles Work By contracting or becoming shorter and thicker - receive impulses from the nervous system - work in pairs - when one muscle is contracting the other is relaxing

8. How Muscles Work Muscle Tone- slight constant contraction of a muscle that is due to contractioin of some of its fibers - enables you to maintain your posture - Atrophy- when muscles weaken or shrink, caused by injury or underuse

9. Keeping your Muscles Healthy Avoid using anabolic steroids– artificial forms of the male hormone testosterone Muscle strain- or pulled muscle Torn muscle- when muscle fibers rip Tendonitis- overuse of a tendon, painful swelling and irritation Muscle cramp- strong, uncontrolled muscle contraction

10. Treatment and Prevention Treatment includes: RICE - Rest - Ice - Compression - Elevation Prevention includes: -stretching - drinking water - varying routine

11. Muscular System

12. Achilles Tendon Bicep Deltoid External Oblique Gastrocnemius Gluteus Maximus Hamstrings Latissimus Dorsi Pectoralis Major Quadriceps Rectus Abdominus Sartorius Tibialis Anterior Trapezius Tricep Q

13. Muscles at Work Review the exercise(s) you and your partner have been given. Practice the exercise with your partner. While you practice, identify the muscles used when performing your exercise. Be prepared to report out to the class. Show the class your exercise and explain what muscles are used.

14. The Runner’s Stretch

15. Standing Side Stretch

16. Seated Back Twist

17. The Bound Angle/Butterfly

18. Front and Back Leg Swings

19. Sideways Leg Swings

20. Handwalk

21. Lunge with Rotation

22. Arm Swings

23. Power Skips

24. Doorway Stretch

25. Lateral Flexion Stretch

26. Arm Stretch