Question

What is the correct sequence of passage of air during inspiration?

• A. Larynx → Trachea → Bronchiole → Bronchi → Alveoli
• B. Larynx → Pharynx → Trachea → Bronchiole → Bronchi → Alveoli
• C. Pharynx → Larynx → Trachea → Bronchi → Alveoli
• D. Pharynx → Trachea → Bronchiole → Bronchi → Alveoli

Answer 1

The correct option is C

Pharynx → Larynx → Trachea → Bronchi → Alveoli

The correct option is C.

Explanation for the correct option:

1. The nasal chamber is where air enters the respiratory system through the nostrils.
2. The air then passes through the pharynx, passing through the nasopharynx, oropharynx, and laryngopharynx, before being directed to the larynx.
3. Because the larynx is located above the trachea, the air is transferred to the trachea or windpipe.
4. From the trachea, air moves to the bronchi, then to the bronchioles, and subsequently to the alveoli, whereupon gases are interchanged with blood.
5. In the respiratory tract, air travels through the following routes: Nostrils → nasal cavity →Pharynx → Larynx →Trachea → Bronchi → Bronchioles → Alveoli or air sacs.

Final answer: The correct sequence of the passage of air during inspiration is Pharynx → Larynx → Trachea → Bronchi → Alveoli