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The process of moving oxygen and carbon dioxide in opposite directions between the environment, bodily fluids, and cells.
All the structures of an animal that contribute to gas exchange.
Atmospheric(or barometric) pressure
The gases in air exert pressure on the body surfaces of animals.
The individual pressure of each gas. Symbolized by a capital P and a subscript depending on the gas.
The process of bringing oxygenated water of air into contact with a gas exchange surface.
Biology Chapter 48