PATHOLOGY

Detailed explanation-1: -This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

Detailed explanation-2: -In the lungs, the gaseous exchange occurs through alveoli in the lungs and blood capillaries. The oxygen inhaled through the air in the lungs moves from the alveoli to the blood in the capillaries through the process of diffusion as the oxygen concentration is high in the alveoli and low in the blood capillaries.

Detailed explanation-3: -Gas exchange occurs within the lower airways, primarily the alveoli. Often called the “business end” of respiration.