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Conclusion Questions 3.3.1 1. The walls of the alveoli in the lungs are incredibly thin. Explain how this structure is related to function in the body. The walls of the alveoli are extremely thin so that they can serve their purpose of allowing diffusion of oxygen and carbon dioxide to happen. This is where gas exchange occurs.
it is made up of the alveoli's because they have very thin walls, only one cell thick to allow exchange/diffusion of gases through it and interchange of these gases with the blood, the capillary network means the gases can be easily delivered to the lungs and absorbed into the blood at the lung surface.est Answer: Alveoli are the actual sites of gas exchange between the lungs and the blood. They are incredibly thin to allow easy diffusion of gases (oxygen and carbon dioxide) back and forth.