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Question
Match the following:
Name of the part — Functions
- (i) Nostrils — (a) fresh air from outside enters
- (ii) Nasal passages — (b) exchange of gases occurs
- (iii) Windpipe — (c) protects lungs
- (iv) Alveoli — (d) tiny hair and mucus help to trap dust and dirt from the air we breathe
- (v) Ribcage — (e) air reaches our lungs through this part
🔗 Concept: 9.2.1 How Do We Breathe?
Show answer
(i)→(a), (ii)→(d), (iii)→(e), (iv)→(b), (v)→(c)
Explanation
- (i) Nostrils → (a) fresh air from outside enters through the nostrils.
- (ii) Nasal passages → (d) tiny hair and mucus in nasal passages trap dust and dirt.
- (iii) Windpipe → (e) air travels through the windpipe to reach the lungs.
- (iv) Alveoli → (b) exchange of gases (O₂ in, CO₂ out) occurs in the alveoli.
- (v) Ribcage → (c) the ribcage protects the lungs.
Each part of the respiratory system has a specific job in getting air to the lungs and keeping them safe.
