The human body

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Across
  1. 4. Used to stop germs from entering the body t through the nose and mouth.
  2. 7. What humans inhale while breathing.
  3. 8. Smallest organ in the body.
  4. 10. Brings oxygen and nutrients to all parts of the body.
  5. 11. Smallest blood vessels.
  6. 13. Fist-suzed organ that pumps blood throughout the body.
  7. 14. The largest gland in the human body.
  8. 15. dioxide What humans exhale while breathing.
  9. 16. The largest organ.
  10. 17. Blood vessels used to bring deoxygenated blood from organs to the heart.
  11. 18. Commonly know as the most useless organ in the body.
  12. 19. Organ used to remove waste and extra fluids from the body.
Down
  1. 1. Anither name for tailbone.
  2. 2. Most complex organ in the human body.
  3. 3. Chemicals that control bodily functions.
  4. 5. Provides main support for the body.
  5. 6. Organ used to break down food and absorb nutrients.
  6. 9. Organ used to store bile.
  7. 12. Protects vital organs found in the chest.
  8. 14. Organs used for breathing.