Respiratory System

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Across
  1. 2. flap of tissue that covers the windpipe during swallowing (9 letters)
  2. 3. The process of taking air into the lungs (11 letters)
  3. 4. The tiny hair-like structures in the airways that help move mucus (6 letters)
  4. 5. Tiny air sacs in the lungs where gas exchange happens (7 letters)
  5. 6. The main muscle involved in breathing (9 letters)
Down
  1. 1. The gas we exhale as a waste product (6 letters)
  2. 2. The windpipe that connects the throat to the lungs (7 letters)
  3. 3. The gas we inhale that is essential for life (6 letters)
  4. 4. The large tubes that branch off from the trachea and lead into each lung (8 letters)
  5. 5. The part of the respiratory system shared with the digestive system (6 letters)