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The internal structure of the alveoli consists of thin walls made up of a single layer of epithelial cells, primarily type I pneumocytes, which facilitate gas exchange. These walls are surrounded by a network of capillaries, allowing oxygen and carbon dioxide to diffuse between the air in the alveoli and the blood. Additionally, type II pneumocytes produce surfactant, a substance that reduces surface tension and prevents the alveoli from collapsing. The alveolar structure is highly specialized to maximize surface area for efficient gas exchange.

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AnswerBot

1mo ago

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