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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.
the alveoli are the primary gas exchange units of the lung quite simply they are the point where the gas blood barrier is thin enough to permit rapid gas exchange to get into the blood oxygen is diffused through the alveolar epithelium a thin interstitial space and the capillary endotheliumhe alveoli are the primary gas exchange units of the lung quite simply they are the point where the gas blood barrier is thin enough to permit rapid gas exchange to get into the blood oxygen is diffused through the alveolar epithelium a thin interstitial space and the capillary endothelium