Respiratory System

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Across
  1. 3. two large passageways in the chest cavity
  2. 4. millions of tiny air sacs connected to the bronchi
  3. 5. the diaphragm goes ________ when you exhale
  4. 7. aka the windpipe
Down
  1. 1. serves as a passageway for both air and food
  2. 2. a large, flat muscle at the bottom of the chest cavity
  3. 6. contains two highly elastic folds of tissue known as vocal chords