Definitions for "Gas exchange"
In animals, the process of taking up oxygen from the environment and releasing carbon dioxide to the environment.
Process of oxygen uptake and carbon dioxide release within the lung. The rate at which the gases "exchange" in perfluorochemicals depends upon the difference in the partial pressure of the gases in the liquid versus the surrounding blood environment in the lung.
The exchange of Oxygen for Carbon Dioxide which takes place in the Alveoli of the Lungs.
Gas exchange or respiration takes place at a respiratory surface - a boundary between the external environment and the interior of the body. For unicellular organisms the respiratory surface is simply the cell membrane, but for large organisms it usually is carried out in respiratory systems.