Across
- 4. calf muscle
- 5. muscles that move quickly
- 7. is both voluntary and involuntary
- 11. chest muscles
- 12. flexes hip
- 14. when muscles lengthen
- 17. shoulder muscles
- 18. connects bone to bone
- 19. muscles that move the body
- 20. involuntary muscle lining stomach
- 21. when muscles shorten
Down
- 1. heart muscle
- 2. moves mouth
- 3. straightens knee
- 6. straightens elbow
- 8. bends elbow
- 9. flexes knee
- 10. wrinkles forehead
- 13. muscles used in endurance activities
- 15. when muscles contract but do not move
- 16. attaches muscle to bone