Across
- 5. Helps maintain body position
- 7. Under your control
- 9. Where muscle attacks to bone
- 10. muscles cells work together
- 13. Hollow muscle
- 16. Not under people's control
- 17. Help produce movement
- 18. Muscle fibers are stimulated repeatedly
- 19. when tension is created because of motion
Down
- 1. Protein that have "heads"
- 2. Main part of muscle
- 3. Thin myofilament
- 4. Muscles that relax during movement
- 6. Builds up most of the Heart
- 8. 40-50% of body weight
- 11. produces specific muscle movement
- 12. acts as an anchor
- 14. converts chemical energy to mechanical creates heat waste
- 15. how muscles are packaged