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