Respiratory system- Crossword

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Across
  1. 3. Bones that protect the lungs
  2. 6. Muscle that moves lungs during inhalation
  3. 8. Known as the ‘voice box’
  4. 9. Appear as clusters of grapes in the lungs. This is where gas exchange occurs
Down
  1. 1. Main organs that we use to breathe
  2. 2. Known as the ‘windpipe’
  3. 4. tubes that carry air from the trachea into the lungs
  4. 5. To remove air from the body
  5. 7. To take air into the body