Q. 155.0( 1 Vote )
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 → nostrils → pharynx → lungs
D. nostrils → pharynx → larynx → trachea → alveoli
The inhaled air travels from nostril to pharynx. From pharynx it enters into larynx. The epiglottis acts as a lid due to which air enters the trachea and not into the alimentary canal. The trachea thus provides a clear airway for air to enter into 2 large tubes called bronchi which leads to one of the lungs. The bronchi divide into bronchioles which further divide into alveoli. Gas exchange takes place here in alveoli.
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