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