The human respiratory system

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Across
  1. 2. Tiny air sacs where gas exchange happens.
  2. 4. Passage that connects nose to larynx.
  3. 6. Muscle that helps breathing.
  4. 8. Tube that connects the larynx to the bronchi.
  5. 10. Gas needed by the body to survive.
Down
  1. 1. Process of breathing in.
  2. 3. Main organs where gas exchange occurs.
  3. 5. Tubes that carry air into the lungs.
  4. 7. The voice box.
  5. 9. Organ where air enters the body.