Respiratory system

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Across
  1. 3. The act of expelling air containing carbon dioxide from the lungs.
  2. 4. The ____________ system is responsible for carrying oxygen from the air into the blood.
  3. 5. ________________ respiration is the movement of air between the atmosphere and the alveoli
  4. 7. It allows outside air to be warmed and filtered before entering the lungs.
Down
  1. 1. The process of drawing oxygen into the lungs
  2. 2. It is a tuve that extends from the larynx to the chest and carries air to the lungs.
  3. 6. They are responsible for respiratory function.