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ACSM Personal Trainer

Category - Initial Client Consultation and Assessment

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Variation in the diameter of the bronchioles controls what function?

Resistance to air flow and the ventilation in the lungs
Ability to expel air forcefully in a cough
The level of oxygen exchange
Expulsion of air from the lungs through the larynx during speech

Explanation

Answer: A - The diameter of the bronchioles controls resistance to air flow and the ventilation in the lungs. The pressure change within the lungs is what forces air in and out of the lungs for inhalation and exhalation.

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