Muscles

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Across
  1. 1. Name for thick myofilaments
  2. 3. What activates tropomyosin
  3. 7. Specialized smooth endoplasmic reticulum
  4. 8. Where action occurs in the sarcomere
  5. 9. Covers each muscle fiber
  6. 10. Another name for muscle cell
  7. 11. Where myosin is anchored
  8. 12. Line where actin molecules attach to each other
  9. 14. Bundles of thick and thin myofilaments
  10. 16. Which part of myosin acts on actin?
  11. 17. 2 Terminal cisterna + 1 T Tubule = ___
  12. 18. Smallest functional unit of skeletal muscle fiber
  13. 19. Allows for electrical stimulate to reach each fiber
Down
  1. 2. Name for muscle fiber cytoplasm
  2. 4. What actin molecules are “hidden” under when not activated
  3. 5. Name for thin myofilaments
  4. 6. Where a motor neuron
  5. 7. Special name for the muscle fiber plasma membrane
  6. 13. Covers the entire muscle
  7. 15. Divides and covers the muscle into bundles