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The increasingly smaller airways branching off into the lungs are known as bronchi and bronchioles. The primary bronchi divide into secondary (lobar) bronchi, which further divide into tertiary (segmental) bronchi, and continue to branch into smaller bronchioles. These bronchioles eventually lead to terminal bronchioles, which then connect to the alveolar ducts and alveoli, where gas exchange occurs. This branching structure facilitates the distribution of air throughout the lungs, maximizing surface area for respiration.

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5d ago

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