The Respiratory System and Structures

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Across
  1. 2. A thin membrane which surrounds and protects the lungs
  2. 3. Tiny, hair-like structures located throughout the lining of multiple structures in the respiratory system which filter out foreign debris
  3. 8. A thin sheet of muscle located under the lungs
  4. 9. The lungs are housed in the _______ cavity, which is sometimes called the chest
  5. 10. Tiny sacs surrounded by a network of capillaries; Involved in gas exchange occurring in lungs
  6. 11. __________ muscles are responsible for the movement of the ribs during inhalation and exhalation
  7. 13. Common passageway for both food and air
  8. 14. A flap of cartilage which is intended to prevent food and other solid matter from entering the trachea
  9. 15. The voice box; it is responsible for the production of human sound
  10. 16. Mucus-secreting cells in the lining of the nasal cavity perform this action on incoming air
  11. 17. Principle component of the majority of the air we breathe
Down
  1. 1. Your "windpipe"
  2. 4. Red pigment in blood which binds to oxygen
  3. 5. Responsible for the movement of gases between the capillaries and alveoli
  4. 6. We cannot live without this vital gas
  5. 7. Another name for "inhalation"
  6. 12. Air may enter the body through either the oral ______ or nasal _______
  7. 15. The major organ of the respiratory system