RESPIRATORY SYSTEM

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Across
  1. 3. Connects the nse and lungs
  2. 6. The process of inhaling and exhaling
  3. 8. Organ where oxygen and carbon dioxide are exchanged
  4. 9. Gas needed by the body for energy
Down
  1. 1. What happens to gases in the alveoli
  2. 2. Small air sacs in the lungs
  3. 4. Muscle that helps you breathe
  4. 5. Gas expelled when you exhale
  5. 7. Primary entry pont for air