Respiratory system

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Across
  1. 2. Also known as the 'voice box', it produces sounds.
  2. 4. The exchange of oxygen and carbon dioxide between the body and the environment.
  3. 6. Covers the trachea during swallowing to prevent food from entering the lungs.
  4. 7. Also known as the 'windpipe', it connects the larynx to the lungs.
  5. 8. muscle below the lungs that controls breathing
Down
  1. 1. long tubes that connect the trachea to the lungs
  2. 2. paired organ responsible for bringing in oxygen and removing carbon dioxide
  3. 3. system responsible for gas exchange and speech
  4. 5. Endpoint of the respiratory system, thinly walled to allow exchange of oxygen and carbon dioxide.