Question

The role of nasal cavity in human respiratory system
(i) Removal of germs and dust.
(ii) Moistening of the inhaled air.
(iii) Filtration of inhaled air.
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A. (i) & (ii)
B. (i),(ii) & (iii)
C. (i) & (iii)
D. None of these

Answer 1

Answer:

option c as cuz it helps to filtrate and it removes germs as well

Answer 2

Option B is correct.

Explanation:

• Nasal cavity in the human body will filter and moisturize the air before it reaches the lungs while inhaling.
• Hairs and mucus lining will remove the dust and germs in the nasal cavity.
• After inhaling the air through the nose, it returns the moisture and heat before the exhaling process.
• Nose protects the nasal cavity and the nose is made up of bone, muscle and skin.
• Nose is most important in the human body to breathe.
• Humans and animals cannot live without breathing and nasal cavity helps in the breathing process.
• Therefore, option B is correct.