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Question
_________ expels foreign particles from the nasal cavity.
_________ expels foreign particles from the nasal cavity.
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Solution
The correct option is A Sneezing
- Inhaled air contains various types of unwanted foreign particles like dust, pollens, smoke and germs.
- Sneezing expels these foreign particles from the nasal cavity so that only dust-free, clean air enters our body.
- Yawning helps to bring more oxygen into the lungs and expel excess carbon dioxide out of the lungs.
- Inhaled air contains various types of unwanted foreign particles like dust, pollens, smoke and germs.
- Sneezing expels these foreign particles from the nasal cavity so that only dust-free, clean air enters our body.
- Yawning helps to bring more oxygen into the lungs and expel excess carbon dioxide out of the lungs.
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