Vocaburaly

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Across
  1. 3. skeletal mussel
  2. 4. flap of tissue
  3. 6. behided your nose and mouth
  4. 8. dioxide exhale
  5. 10. Divides in branches
  6. 11. air sacks for your longs
  7. 12. a blood vessel
Down
  1. 1. a long tube that connects to your voice box
  2. 2. skull around cheeks and forehead
  3. 5. tree the trachea in two primarily branches
  4. 7. action of breathing
  5. 9. chemical reaction blood cell