The Respiratory System

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Across
  1. 3. Two external openings in the nasal cavity
  2. 6. The organ that separates the thorax from the abdomen
  3. 7. The membrane lined cavity that behind the nose and mouth
Down
  1. 1. An air passage to the lungs that also holds the vocal cords
  2. 2. A membranous tube that extends from the Larynx to the bronchial tubes
  3. 3. A large air filled space above and behind the nose
  4. 4. The organs that consist of an elastic sacs with branching passages into which air is drawn
  5. 5. The major air passages of the lungs that diverge from the wind pipe