Grade 4

1. Muscular System

2. How many muscles have you got?

4. ARE MUSCLES RIGID or FLEXIBLE?

5. MUSCLES ARE FLEXIBLE!

7. INVOLUNTARY MUSCLES You CAN´T CONTROL this type of muscle.

8. INVOLUNTARY MUSCLES Eyes Stomach Intestines Uterus Bladder

9. VOLUNTARY MUSCLES You CAN CONTROL this type of muscle. -The Face, Arms, and Legs have got voluntary muscles.

10. Voluntary Muscles Your brain sends messages to 'contract' or 'relax ' muscles.

11. Major Muscles

12. Left Picture BICEPS CONTRACTED Right Picture BICEPS RELAXED

19. KEEP MUSCLES HEALTHY WITH EXERCISE!!! You can help your muscles stay strong and healthy by exercising every day.