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Question
Which is the correct sequence of air passage during inhalation?
Options
Nostrils → larynx → pharynx → trachea → lungs
Nasal passage → trachea → pharynx → larynx → alveoli
larynx → nostrils → pharynx → lungs
Nostrils → pharynx → larynx → trachea → alveoli
Solution
Nostrils → pharynx → larynx → trachea → alveoli
Explanation -
Through the nose, air enters the respiratory system, passing through the pharynx, larynx, trachea, and alveoli. Following inhalation, the diaphragm and intercoastal muscles contract, coupled with the thoracic muscles expanding, allowing air to enter the lungs.
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