how does our lungs clean themselves from small things that get in them like dust?
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Our lungs have tiny hair-like structures called cilia and sticky stuff called mucus that help keep them clean. When we breathe in, some particles like dust can enter our lungs. The cilia move in a sweeping motion to push the particles along with the mucus out of our lungs. It’s like a cleaning crew inside our lungs that gets rid of the stuff that shouldn’t be there. We might cough or swallow to remove the mucus and the particles from our bodies. So, our lungs have their own special way of cleaning themselves to stay healthy.
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