Exchange of Gases
The primary site of exchange of gases is the alveoli and therefore exchange of CO2 and O2 occurs between blood and tissues. In these type of sites, gas exchange occurs by simple diffusion which are based on the pressure or concentration gradient. The rate of diffusion depends on the solubility and thickness of the membrane which are involved in the exchange of gases.
Exchange Of Gases Notes CBSE Class 11
The exchange of gases refers to the process that happens between carbon dioxide and oxygen. Gas exchange takes place between the capillaries and alveoli. The rate of diffusion depends on the solubility and thickness of the membrane which are involved in the exchange of gases. Oxygen is transferred from the lungs to the bloodstream whereas carbon dioxide is eliminated from the bloodstream to the lungs.