Muscle Physiology

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