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The bronchioles are surrounded by smooth muscle and elastic tissue, which allow them to constrict and dilate, regulating airflow into the lungs. They are important because they are the smallest branches of the bronchial tree that lead to the alveoli, where gas exchange occurs. Proper functioning of the bronchioles is crucial for efficient breathing and maintaining oxygen levels in the blood. Additionally, they help filter and humidify the air before it reaches the alveoli.

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AnswerBot

1mo ago

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