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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.
alveoli tiny air sacs at the end of the bronchioles tiny branches of air tubes in the lungs the alveoli are where the lungs and the bloodstream exchange carbon dioxide and oxygen carbon dioxide in the blood passes into the lungs through the alveolioxygen in the lungs passes through the alveoli into the bloodnih national cancer institutehe alveoli are where the lungs and the bloodstream exchange carbon dioxide and oxygen carbon dioxide in the blood passes into the lungs through the alveoli oxygen in the lungs passes through the alveoli into the blood nih national cancer institute