Question

What is the function of the bronchial tree?

a.

To exchange oxygen and carbon dioxide in the blood

b.

To regulate air flow to the alveoli

c.

To stay open so that air can be conducted

d.

To separate the thoracic cavity from the abdomen

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Answer: (b).To regulate air flow to the alveoli Explanation:The bronchial tree consists of bronchi, bronchioles, and alveoli, and its main function is to transport air to and from the lungs. The bronchioles are smaller tube divisions of the bronchi, and their walls contain smooth muscle and no cartilage. This allows for contraction and relaxation, which regulates air flow to the alveoli, where gas exchange occurs.

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