MICROANATOMY

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: -Basic Principles of Gas Exchange Gas exchange during respiration occurs primarily through diffusion. Diffusion is a process in which transport is driven by a concentration gradient. Gas molecules move from a region of high concentration to a region of low concentration.

Detailed explanation-3: -Exchange of gases in lungs occurs through simple diffusion. In this gaseous exchange, oxygen passes from the alveoli into the pulmonary capillary blood and carbon dioxide comes to alveoli from the pulmonary capillary.

Detailed explanation-4: -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.