Across
- 1. muscle lining organs
- 6. A-M connection
- 8. thin filament
- 11. actin & myosin
- 12. automatic contraction
- 13. stored in sarcoplasmic reticulum
- 14. end of sarcomere
- 15. contractile unit of muscle cells
- 16. Sarcoplasmic ___________: tube network surrounding myofibrils
- 18. controllable contraction
- 20. support function
- 21. encapsulates muscle
- 23. fibrous connective tissue
- 24. M Line + myosin
- 26. muscle fiber cell membrane
- 29. rhythmic, wavelike contraction
- 31. shorten
- 33. thick filament
- 34. main function
- 35. lengthen
- 36. muscle attached to bones
- 37. extension of sarcolemma into myofibrils
- 38. myosin attachment
Down
- 2. made of myofilaments
- 3. long, slender fibers that contract when stimulated
- 4. muscle of heart
- 5. proximal muscle attachment
- 7. encapsulates each muscle fiber
- 9. skeletal muscle cell level
- 10. bundles of muscle fibers
- 12. distal muscle attachment
- 15. appearing striped
- 17. surrounds each fascicle
- 19. 85% of ______ production
- 22. skeletal muscle tissue level
- 25. cyotplasm
- 27. skeletal muscle organ level
- 28. band with overlapping A & M filaments
- 30. band containing only actin
- 32. bundle of fascicles