The respiratory system has built-in methods to prevent harmful substances in the air from entering the lungs. Hairs in your nose help filter out large particles. Microscopic hairs, called cilia, are found along your air passages and move in a sweeping motion to keep the air passages clean.
Answers & Comments
Answer:
nostrils
Explanation:
If air goes in the nostrils (also called nares), the air is warmed and humidified.
I'm not sure what your lesson is but I hope this helps
Answer:
The respiratory system has built-in methods to prevent harmful substances in the air from entering the lungs. Hairs in your nose help filter out large particles. Microscopic hairs, called cilia, are found along your air passages and move in a sweeping motion to keep the air passages clean.
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