Human Body Crossword

123456789101112131415
Across
  1. 2. wave like contraction
  2. 3. protect lungs, heart, etc.
  3. 7. filters blood
  4. 8. a fiber that sends impulses throughout your body
  5. 10. longest bone in body
  6. 13. make up foot bones
  7. 14. allow your skeleton to move
Down
  1. 1. flap that guides food down the right hole
  2. 4. largest organ
  3. 5. protect the spinal cord
  4. 6. make up your hand bones
  5. 9. allows you to see
  6. 11. deepest layer of skin
  7. 12. holds urine temporarily
  8. 15. first line of defense against invaders