Which structure is NOT found in the upper airway?

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Multiple Choice

Which structure is NOT found in the upper airway?

Explanation:
Structures in the airway are divided into upper and lower segments. The upper airway includes pathways that bring air from outside to the trachea and help with warming, humidifying, filtering, and protecting the airway—for example, the pharynx and larynx (the pharynx includes the oropharynx; the larynx sits just above the trachea). The lower airway lies beyond the trachea, comprising the trachea’s branches into the bronchi and smaller airways within the lungs. A bronchus is a major branch of the trachea inside the lungs, so it belongs to the lower airway, not the upper airway. Hence, bronchus is not found in the upper airway.

Structures in the airway are divided into upper and lower segments. The upper airway includes pathways that bring air from outside to the trachea and help with warming, humidifying, filtering, and protecting the airway—for example, the pharynx and larynx (the pharynx includes the oropharynx; the larynx sits just above the trachea). The lower airway lies beyond the trachea, comprising the trachea’s branches into the bronchi and smaller airways within the lungs. A bronchus is a major branch of the trachea inside the lungs, so it belongs to the lower airway, not the upper airway. Hence, bronchus is not found in the upper airway.

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