Across
- 2. a neurotrasmitter
- 4. striated and involuntary
- 7. muscle attachmentment at movable bone
- 9. nonstriated and involuntary
- 12. glucose is broken down to lactic acid when oxygen is not present
- 14. reduction of negative membrane potential
- 15. connective tissue surrounding whole muscle
- 17. striated and voluntary
- 19. extension of sarcolemma that conducts nerve impulses in muscle cells
- 20. bundle of muscle cells
- 21. cell membrane of a muscle cell
- 23. actin and myosin
Down
- 1. connective tissue sheath around each muscle fiber
- 2. glucose is broken down using oxygen to make ATP
- 3. thick filament
- 5. rodlike contractile element
- 6. space between axon terminal and the muscle fiber
- 8. basic contractile unti (composed of myofilaments)
- 10. oxygen-binding protein in muscle cells
- 11. smooth ER that regulates levels of Calcium ions in muscle cells
- 13. electrical current through a membrane
- 16. glucose is broken down into pyruvic acid
- 18. muscle cell
- 22. thin filament