Respiratory System

123456789
Across
  1. 6. the process of intaking oxygen
  2. 8. runs from the mouth to the stomach
  3. 9. the lungs put this gas into the bloodstream
Down
  1. 1. used for smelling and breathing
  2. 2. the most important organ in the respiratory
  3. 3. we exhale this gas
  4. 4. also known as the wind pipe
  5. 5. prevents food from entering the windpipe
  6. 7. called the voice box by some