Muscle cross word

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Across
  1. 2. line through fibers
  2. 5. organelle of muscle cell
  3. 6. both myosin and actin
  4. 7. response to stimuli
  5. 13. is a bunch of muscle fibers
  6. 15. neurotransmitter
  7. 16. actin only
  8. 18. between fibers
  9. 19. connects muscle to bone
Down
  1. 1. ability to be stretched
  2. 3. junction connects motor nerve to its fibers
  3. 4. ability to contract
  4. 8. above fiber bundles
  5. 9. fluffy fiber
  6. 10. from z line to z line
  7. 11. in between fiber bundles
  8. 12. ability of a muscle to return its to original length
  9. 14. thin fiber
  10. 17. unit nerve and everything it controls