Exams › NEET › Biology

The pathway of inhaled air is - Nostrils → pharynx (common passage for food & air) → larynx (voice box) → trachea (the wind pipe) → bronchi (2 for each side lungs) → bronchioles (give rise to alveolar ducts) → alveoli (the exchange site for gases in the form of small sacs or pouches).

1. Carbonic acid is unstable & gives H⁺ and HCO₃⁻. H⁺ bind with haemoglobin to maintain the pH of blood while HCO₃⁻ remain in the blood and carries the CO₂ to lungs.
2. The total volume of air that can be expelled from the lungs after maximum inspiration and then expiring to the maximum is known as the vital capacity. The volume of air that remains inside lungs at the end of maximum forceful expiration is the residual volume. Expiratory reserve volume is the maximum extra volume of air that can be expired by forceful expiration after a normal tidal expiration. Total lung capacity is the maximum volume of air that can be contained in the lungs after maximum inspiration.
3. The pathway of inhaled air is - Nostrils → pharynx (common passage for food & air) → larynx (voice box) → trachea (the wind pipe) → bronchi (2 for each side lungs) → bronchioles (give rise to alveolar ducts) → alveoli (the exchange site for gases in the form of small sacs or pouches).
4. Carbonic anhydrase is a zinc-containing enzyme present in RBCs. In presence of this enzyme, carbon dioxide reacts with water to form carbonic acid.

Correct answer: The pathway of inhaled air is - Nostrils → pharynx (common passage for food & air) → larynx (voice box) → trachea (the wind pipe) → bronchi (2 for each side lungs) → bronchioles (give rise to alveolar ducts) → alveoli (the exchange site for gases in the form of small sacs or pouches).

Solution

The correct choice is the one that matches the normal pathway of inhaled air through the respiratory system. It starts at the nostrils and ends at the alveoli, where gas exchange occurs.

Related NEET Biology questions

• Skin is an accessory organ of respiration in
• Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls.
• Name the chronic respiratory disorder caused mainly by cigarette smoking.
• Which of the following are the correct statement for respiration in human?
• Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of
• Reduction in pH of blood will

⚔️ Practice NEET Biology free + battle 1v1 →