The trachea is part of which portion of the airway?

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Multiple Choice

The trachea is part of which portion of the airway?

Explanation:
Airways are described as upper and lower. The upper airway includes structures like the nose, mouth, pharynx, and larynx. The trachea sits below the larynx and serves as the main conduit into the lungs, so it belongs to the lower airway. It conducts air down toward the bronchi and is part of the conducting airways, equipped with ciliated cells to help filter and humidify air. Alveolar sacs are where gas exchange occurs and are distal to the conducting airways, while bronchioles are smaller conducting passages within the lower airway. Thus, the trachea is part of the lower airway.

Airways are described as upper and lower. The upper airway includes structures like the nose, mouth, pharynx, and larynx. The trachea sits below the larynx and serves as the main conduit into the lungs, so it belongs to the lower airway. It conducts air down toward the bronchi and is part of the conducting airways, equipped with ciliated cells to help filter and humidify air. Alveolar sacs are where gas exchange occurs and are distal to the conducting airways, while bronchioles are smaller conducting passages within the lower airway. Thus, the trachea is part of the lower airway.

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