Respiratory System

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Across
  1. 2. the voice box
  2. 4. take air into the lungs and then expel it
  3. 7. teeth, gums, soft and hard palates, tonsils, salivary glands, and tongue
  4. 8. windpipe
  5. 9. pair of spongy, air-filled organs located on either side of the chest
Down
  1. 1. colorless, odorless gas produced by respiration
  2. 3. a hollow structure lined with moist tissue
  3. 5. slimy substance
  4. 6. thin contraceptive cap fitting over the cervix