Question

What are bronchioles?

a.

Smaller tube divisions of the bronchi

b.

Tiny air sacs that exchange oxygen and carbon dioxide in the blood

c.

The wall of the trachea

d.

The primary branch of the trachea

Posted under IC22 Life Insurance Underwriting

Answer: (a).Smaller tube divisions of the bronchi Explanation:Bronchioles are smaller tube divisions of the bronchi. Its walls contain smooth muscle and no cartilage. This allows contraction and relaxation, thereby regulating air flow to the alveoli.

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