Nikolas
Created page with "The gas exchange occurs in the gas exchange zone of the lung, including the respiratory bronchioli, alveolar ducts and alveoli. The total surface area of the gas exchange zone is on the order of 100 square meters. === The respiratory membrane: === All the membranes O2 and CO2 must diffuse through during gas exchange are collectively called the ''respiratory membrane''. It is extremely thin, at around 0,5 µm. The membrane has six layers, from the alveoli to the capillar..."
