Human body

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Across
  1. 3. muscle sac in digestive system that does most of the chemical digestion.
  2. 5. tube that connect mouth to the stomach.
  3. 6. filters blood.
  4. 9. upper chamber of the heart.
  5. 11. airways that connect bronchi too alveoli.
  6. 12. type of blood cell that helps form scabs.
  7. 13. tiny sacs at the end of bronchioles that control the transfer of oxygen and carbon dioxide.
Down
  1. 1. system transports oxygen and carbon dioxide and helps you breathe.
  2. 2. lower section of the heart.
  3. 4. tube for air is also called windpipe.
  4. 7. in the kidney and it filters blood.
  5. 8. system System that breaks down food.
  6. 10. stores urine.
  7. 11. two branches off of the lungs