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The tertiary bronchi arise from the secondary bronchi, which branch off from the primary bronchi. Each secondary bronchus supplies a specific lobe of the lung, and the tertiary bronchi further subdivide into smaller bronchi, known as bronchioles, that supply the individual segments of the lung lobes. In humans, there are typically three tertiary bronchi in the right lung (due to its three lobes) and two in the left lung (due to its two lobes).

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2mo ago

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