BONES AND MUSCLES (MR. HANBY TRICKERY)

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Across
  1. 2. largest organ of the body
  2. 4. major upper arm muscle
  3. 6. bones that protect the spinal cord
  4. 7. the smallest lung
  5. 8. feels no pain
  6. 11. upper, front leg major muscle
  7. 12. you've got 56 of these
  8. 14. houses the brain
  9. 17. system: converts food into nutrients
  10. 18. one of the lower leg bones
  11. 19. a protein in finger-toe nails
Down
  1. 1. movable part of the jaw
  2. 2. system: bones, ligaments, tendons
  3. 3. you have 16 of these in your wrists
  4. 5. holds the rib cage together in the front of the chest
  5. 9. system: brings oxygen into the body's lungs
  6. 10. beats 100K per day
  7. 13. covers the knee joint
  8. 15. system: filters the blood & eliminates waste
  9. 16. upper leg bone