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 Which is the correct sequence of air passage during inhalation?
(a) Nostrils \rightarrow larynx \rightarrow pharynx \rightarrow trachea \rightarrow lungs
(b) Nasal passage \rightarrow trachea \rightarrow pharynx \rightarrow larynx \rightarrow alveoli
(c) larynx \rightarrow nostrils \rightarrow pharynx \rightarrow lungs
(d) Nostrils \rightarrow pharynx \rightarrow larynx \rightarrow trachea \rightarrow alveoli

Answers (1)

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Ans.(d)
Air is drawn into our body through the nostrils, then it goes into nasal passage from there it enters pharynx then to larynx to trachea to finally alveoli where the final oxygen and carbon dioxide are exchanged.
So the correct passage is: Nostrils ⇒ pharynx ⇒ larynx ⇒ trachea ⇒ alveoli
Hence option (d) is correct.

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