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

Answer 1

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.