Question

Which is the correct sequence of air passage during inhalation? 

A. Nostrils → Larynx → Pharynx → Trachea → Lungs 

B. Nasal Passage → Trachea → Pharynx → Larynx → Alveoli 

C. Larynx → Nostril → Pharynx → Lungs 

D. Nostrils → Pharynx → Larynx → Trachea → Alveoli

Answer 1

Air enters in our body through nostrils (external most portion of nose). From there it goes into pharynx (passage of air) and then into larynx (voice box). Then air comes into trachea and from here it reaches alveoli of lungs via bronchi and bronchioles.