9.1 Respiratory System Anatomy

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Across
  1. 2. hairs in nostrils that trap dust and dirt
  2. 8. the job of the ____ system is to bring oxygen to the blood
  3. 9. the gas brought into the body by the respiratory system
  4. 12. windpipe; about 12 inches long
  5. 13. first part of respiratory system
  6. 14. the nose has sticky _____ mucus to catch debris before it is inhaled
  7. 16. large sheet of muscle that controls breathing by contracting/relaxing
Down
  1. 1. flap of muscle that covers larynx when swallowing
  2. 3. voice box
  3. 4. cone shaped organ that stretches during inhalation
  4. 5. the trachea splits into two ____ which bring air to each lung (plural)
  5. 6. the trachea has rings made of ____ to keep it open
  6. 7. tiny branch of a bronchus
  7. 10. air sacs inside lung where gas exchange occurs (plural)
  8. 11. throat; connects nasal cavity with trachea
  9. 15. gaseous waste removed by the respiratory system (write as 1 word no spaces)