Respiratory system

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Across
  1. 2. Tube that delivers air from your mouth and nose to the trachea
  2. 3. Openings that pull air from outside your body into your respiratory system
  3. 4. Two organs remove oxygen that the air and pass it into your blood
  4. 5. carries air to and from your lungs
  5. 6. Hollow areas between your bones in your head that help regulate the tempature and humidify of the air you inhale
Down
  1. 1. Hollow organ that allows you to talk and make sound when air moves in and out
  2. 3. Humidifies,warms and removes particles from the air before it enters the airways