muscle

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Across
  1. 1. relax of muscles
  2. 3. the heart
  3. 4. muscle fibers
  4. 6. done without consent
  5. 8. large muscle of lower limb
  6. 11. long muscle
  7. 13. flexible tissue
  8. 14. muscle down the back
Down
  1. 2. connected to the sternum
  2. 5. cells of heart
  3. 6. to put or introduce something
  4. 7. bones in body
  5. 9. done or given
  6. 10. fixed point that doesn't move
  7. 12. flat surface