Across
- 1. moves tropomyosin away from myosin binding sites during muscle contraction
- 3. muscle that produces any particular movement
- 5. muscle type not striated, involuntary
- 7. help carry electromagnetic signals to the middle of muscle fiber
- 9. triangle shaped muscle at the shoulder
- 10. functional unit of muscle fibers
- 13. made of protein fibers arranged into repeating subunits
- 14. forms a helical structure that makes up the bulk of thin filament mass
Down
- 1. connects muscle to bone
- 2. cell membrane of muscle fibers
- 4. contracts to extend the arm
- 5. muscle that helps stabilize a movement
- 6. long fiber protein that wraps around actin and covers myosin binding sites
- 8. muscle type only found in the heart
- 11. contracts to bend the arm
- 12. voluntary muscle type, striated
- 14. muscle that produces the opposite effect as the agonist