Surfactant
Respiratory surface is the surface where respiratory gas exchange in an animal. Ex-lungs
Frogs uses respiratory surfaces which totals to three to exchange gases on its surroundings. The three respiratory surfaces are the skin, its lungs, and the lining of their mouth.
An exchange surface is in direct contact with the external environment in the respiratory and digestive systems. In the respiratory system, the alveoli in the lungs act as exchange surfaces for oxygen and carbon dioxide. In the digestive system, the lining of the small intestine serves as an exchange surface for the absorption of nutrients.
In the lungs, exchange of gases occurs in the alveoli(sing: alveolus).
Alveoli are expanded chambers of epithelial tissue which form the gas exchange surfaces of the lungs. Multiple alveoli share a common duct forming alveoli sacs.
The lungs do not exchange oxygen and carbon monoxide. They exchange oxygen and carbon dioxide. They do that in the aveoli.
The actual sites of gas exchange within the lungs are the alvioli.
gaseous exchange - in the alveolis
The gas exchange that takes place in the lungs are carbon dioxide and oxygen.
The efficiency of gas exchange in the lungs of vertebrates is greater because it increases the lungs' internal surface area.
gaseous exchange
The bird's respiratory system consists of paired lungs, which contain static structures with surfaces for gas exchange, and connected air sacs, which expand and contract causing air to move through the static lungs.