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3 Cards in this Set
- Front
- Back
- 3rd side (hint)
What Are Cilia
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Small Hair type structures
found in the trachea Sweep backwards & forwards Sweep dirt & bacteria away from the lungs |
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What is Mucus
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Created by certain cells in the trachea
It traps dirt and bacteria when we breath in |
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晚饭,晚飯
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wănfàn
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dinner; supper
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