Respiratory System

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Across
  1. 3. Contains vocal cords
  2. 4. Each of the two parts in which the trachea is divided in two
  3. 6. A muscle that separates the thorax from the abdomen
  4. 8. Tubular organ lined with rings of cartilage
  5. 9. Closes the passage to the larynx
Down
  1. 1. Sacs located at the end of the bronchioles where gas exchange occurs
  2. 2. Smaller ducts of the bronchi
  3. 5. Warm and humidify the air
  4. 7. Its right part has three lobes while its left part has two lobes