Across
- 2. Skeletal muscle is 75% _____.
- 4. The sarcoplasm is under the __________.
- 6. What is under the epimysium?
- 8. What is the elastic filament that connects the M line and the Z line?
- 11. Each muscle fiber in the fasciculus is surrounded by what?
- 12. What is the primary protein in the thin filament
- 15. What does Troponin I bind to?
- 18. Where the t-tubule and two terminal cisternae meet:
- 19. What is loosely connected to the F-actin strands?
Down
- 1. Connective tissue surrounding a fascicle is what?
- 3. How many traids are there per sarcomere?
- 4. Skeletal muscle is _______ in appearance.
- 5. Actin lies in the spaces between
- 7. What is the sheath of connective tissue surrounding the entire muscle?
- 9. Eeach tropomyosin covers about how many active sites?
- 10. Myosin is composed of how many polypeptide chains?
- 13. Troponin C binds to what?
- 14. G-actin can polymerize and unfold into what?
- 16. This is a protein - made of three subunits - attached near one end of each tropomyosin molecule.
- 17. The sarcoplasmic reticulum lies _______ to the myofibrils