Across
- 4. sustained contraction of individual muscle fibers
- 9. muscle fiber plus the motor neuron
- 10. muscles lose ability to contract after prolonged use
- 12. Enlargement of muscles
- 13. A change in voltage of an cell membrane in response to an stimulus
- 14. become small and weak due to disuse
- 17. a muscle under conscious control
- 18. is a collection of cells that excitable
- 19. thick filament
- 22. Skeletal muscle that organized into bundles
- 23. smaller fibers inside muscle cells
- 24. the movable end of the muscle
- 26. single muscle cell
- 27. connects the cells and allows them to move in a wave like motion
Down
- 1. muscle that attaches to bone
- 2. functional unit inside of muscle fibers
- 3. a sustained involuntary contraction
- 5. striated involuntary single nucleus muscle
- 6. the minimal amount of stimulus required
- 7. thin filament
- 8. Is able to shorten and pull on it’s attachment points
- 11. surrounds muscle cells
- 15. more and more fibers contract as the intensity of the stimulus increases
- 16. Pacemaker cells of our heart
- 20. Immovable end of the muscle
- 21. plasma membrane of muscle cells
- 25. an muscle that is not under conscious control