Anatomy Chapter 10

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Across
  1. 2. Contains thin filaments but no thick filaments
  2. 4. Center rod holds the f-actin strand together
  3. 5. Actinin that have a zig-zag shape, marks the end of the sarcomere
  4. 7. Length of the thick filaments
  5. 8. Sarcoplasmic Reticulum functions to store this
  6. 9. Protein that covers the myosin-binding sites on actin
  7. 14. The contractile units of muscles
  8. 16. The plasma membrane of a muscle cell
  9. 17. Muscle protein that binds to the tropomyosin to G-Actin, binds with calcium
  10. 18. muscle fibers develop through the fusion of embryonic cells
Down
  1. 1. Central core of the thick filament
  2. 3. Contains thick filaments, but no thin filaments
  3. 6. The cytoplasm of a muscle cell
  4. 10. is in the center of the band.
  5. 11. Fibers, Axons of the neurons, penetrate the epimysium, branch through the perimysium
  6. 12. Carries action potentials that allow the muscle to contract
  7. 13. Are due to the precise arrangments of actin and myosin in the myofibril
  8. 15. Thick filaments are made of this