The diameter of the airways in normal lungs is generally great enough that little resistance is offered to airflow.

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The diameter of the airways in normal lungs is typically wide enough to allow for easy airflow without significant resistance. However, in certain respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD), the airways may become narrowed due to inflammation or other factors, resulting in increased resistance to airflow.

The Diameter of the Airways in Normal Lungs Is Generally