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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.
Theses alveoli open to alveolar ducts or to sacs there by to the respiratory bronchioles to the upper respiratory tracts. Alveolar wall consists of three tissue components; surface epithelium, supporting tissue and the blood vessels.y Dr.Samanka. Alveoli vs Alveolus. The word alveoli mean small cavities or pits. In the lungs, they refer to the terminal dilatation of tiny air passages, and in the oral cavity, they are the sockets within the jawbone in which the roots of teeth are set.