Respiratory System

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Across
  1. 3. area that lies directly behind the nasal cavity
  2. 7. movement of oxygen from the alveoli into the capillaries
  3. 8. voice box
  4. 9. organs located in the chest where oxygen and carbon dioxide are exchanged during breathing
  5. 11. structure that divides the nose into two hollow spaces
  6. 12. tube that extends from the larynx to the center of the chest
  7. 13. tiny air sacs in the lungs
Down
  1. 1. tiny hair-like structures that help move the mucous layer and particles toward the esophagus
  2. 2. small branches of the bronchi
  3. 4. structure that closes the opening to the trachea during swallowing
  4. 5. cavities in the skull that surround the nasal area and are connected to the nasal cavity
  5. 6. secrete mucus from the epithelial cells in the respiratory tract
  6. 10. bone shelves that increase the surface area of the nasal cavity