What is the site of gaseous exchange in human lungs?

💡 Solution & Explanation

Alveoli are tiny, balloon-like air sacs located at the terminal ends of the respiratory tree where the actual exchange of oxygen and carbon dioxide occurs via simple diffusion. Bronchi and the trachea act merely as conducting pathways for airflow, while the larynx houses the vocal cords. The immense surface area of millions of alveoli ensures efficient pulmonary gas exchange.