Turbulent Flow

Question

Turbulent flow
A) Never occurs in the airways
B) Occurs only in the larger airways and bronchi
C) Occurs in the respiratory units
D) Is enhanced by small diameter of the airways
E) Is increased by increasing the viscosity

Accepted Answer

Turbulent flow occurs in the larger airways and bronchi, especially where there is a high rate of airflow, such as during exercise. Turbulence is less likely in smaller airways due to lower airflow rates and is reduced by increasing viscosity, which tends to dampen turbulence.