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 → nostrils → pharynx → lungs
(d) Nostrils → pharynx → larynx → trachea → alveoli

NCERT Class X
Science - Exemplar Problems

Chapter_Life Processes

Answer 1

Thank you for the question!
The correct option is D. The air enters through nostrils, passes to pharynx,  larynx, trachea and then to alveoli. As soon as the air is inhaled the diaphragm and inter coastal muscles contract meanwhile, there is also the expansion of thoracic muscles which creates enough space for the air to enter into the lungs. The process is opposite  in the case of exhalation.
Hope it helps.

Answer 2

Answer:

Nostrils, pharynx, larynx, trachea, alveoli.