INTERNAL AIRWAYS Crossword Clue

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Crossword Puzzle Infos
The term 'Internal Airways' refers to the tracheas, which are a part of the respiratory system. The tracheas are tubes that carry air from the nose and mouth to the lungs. They are lined with cilia, which help filter out dust and other particles from the air. The tracheas also contain cartilage rings that keep them open and allow air to flow freely.
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