Respiratory System

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Across
  1. 1. separates the nasal cavity from the oral cavity
  2. 4. spoon shaped flap of elastic cartilage, protects the superior opening of the larynx
  3. 8. air leaving the lungs
  4. 10. includes the vocal cords and the opening between the vocal cords
  5. 11. covers the outer surface if the lungs
  6. 12. smallest conducting passageways in the lungs
  7. 14. roots air and food into proper channels, plays a role in speech, made of hyaline cartilage and elastic cartilage.
Down
  1. 2. simple squamous epithelial cells; the only site for gas exchange
  2. 3. forms when oxygen travels attached to a hemoglobin in RBC.
  3. 5. a lipid molecule that coats gas-exposed alveolar surfaces, secreted by cuboidal surfactant secreting cells
  4. 6. oxygen enters the blood, carbon dioxide enters the alveoli, gas exchanges occur as a result
  5. 7. flow of air into lungs
  6. 9. muscular passageway from nasal cavity to larynx
  7. 13. COPD and Lung cancer patients ALMOST always have a history of _______