Respiratory System

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Across
  1. 3. Small tube that connects to the alveoli.
  2. 4. Type of muscle that allows the chest to rise and fall.
  3. 7. Flap that covers the airway when swallowing.
  4. 8. Windpipe.
Down
  1. 1. Large sheet of muscle below your lungs.
  2. 2. Air passes through 2 vocal cords causing vibrations (sound).
  3. 3. Tube branching off the windpipe.
  4. 5. Tiny air sacs where gas exchange takes place.
  5. 6. Air is filtered by hairs & mucus here.