Reyanns Muscle Crossword

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Across
  1. 3. where thick and thin filaments overlap
  2. 5. the plasma membrane of muscle cells
  3. 6. is the boundary between sarcomeres
  4. 10. is a collection of excitable cells.
  5. 11. thick filament
  6. 14. consists of the main tissue of the walls of the heart.
  7. 15. control muscle not undercontrol.
  8. 17. makes the heartbeat.
  9. 18. the functional unit of a muscle fiber
  10. 19. each muscle cell/fiber has smaller fibers within it called
Down
  1. 1. causes movement.
  2. 2. inside skeletal muscles, fibers are organized into these bundles called
  3. 4. found in walls of hollow organs
  4. 7. each muscle is surrounded by a membrane called
  5. 8. tendon attached to muscle bone.
  6. 9. fascicles are surrounded by a membrane called
  7. 10. a single muscle cell
  8. 12. muscle under control
  9. 13. thin filament
  10. 16. each muscle cell/fiber is surrounded by this.