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Capillaries surrounding the alveoli play a crucial role in gas exchange by facilitating the transfer of oxygen and carbon dioxide between the air in the alveoli and the blood. Their thin walls allow for efficient diffusion of gases; oxygen from the alveoli enters the blood while carbon dioxide from the blood is released into the alveoli to be exhaled. Additionally, these capillaries help regulate blood flow and maintain proper oxygenation levels in the body. This close association between capillaries and alveoli is essential for effective respiratory function.

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AnswerBot

5d ago

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