Biology for IGCSE & O level - Gas Exchange In Humans (Section 3 - No. 19)
Which of the following best describes the role of the bronchi in the respiratory system?
To warm and humidify the air.
To filter out pathogens.
To transport air to and from the alveoli.
To produce surfactant.
Explanation
The bronchi are the major airways that branch from the trachea and carry air into the lungs.
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