Respiratory

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Across
  1. 2. inside the respiratory zone the ______ are located
  2. 5. flap that closes over the glottis to prevent food from entering the lungs
  3. 7. epithelial cells have hair-like projections on their surface called _____
  4. 9. smaller airways that repeatedly branch off
  5. 10. transport air from the nostrils to the respiratory tract
  6. 11. a tube that carries air to and from the lungs
Down
  1. 1. bronchioles do not have _________
  2. 3. each lung contains a different number of _____
  3. 4. also known as nares
  4. 6. goblet cells in between the epthelial cells produce _____ to coat the cilia
  5. 8. opening that's larger than the nostrils and allows for the ventilation of a larger volume of air