Respiratory System

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Across
  1. 3. The movement of air into and out of the lungs
  2. 5. a tube like passageway at the top of the throat to receive air, food and liquids
  3. 6. microscopic sacs or pouches
Down
  1. 1. large muscle below the lungs
  2. 2. main organs of the respiratory system
  3. 3. two narrow tubes the the trachea branches to
  4. 4. a tube that's held open by a C-shaped rings of the cartilage
  5. 7. a triangle-shaped area called the voice box