The Respiratory System

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Across
  1. 4. deliver air to your lungs.
  2. 5. It allows air to enter your body, then filters debris and warms and moistens the air.
  3. 7. can be used to supplement or replace the nasal cavity's functions when needed.
Down
  1. 1. bring in air from the atmosphere and pass oxygen into the bloodstream.
  2. 2. permit speech and allow air to pass into the lungs while blocking food and drink from entering.
  3. 3. to carry air in and out of your lungs.
  4. 6. is a ring-like muscular tube that acts as the passageway for air, food and liquid.