What is the effect of bronchoconstriction on the diameter of the airways?Multiple choice question.decreased diameterincreased diameter

Understanding Bronchoconstriction

Bronchoconstriction refers to the narrowing of the air passages in the respiratory system due to the contraction of the smooth muscle surrounding the bronchi and bronchioles. This can occur as a response to various stimuli, such as allergens, irritants, or during conditions like asthma.

Effects on Airway Diameter

1. Decreased Diameter: Bronchoconstriction leads to the tightening of these muscles, which results in a reduction of airflow through the airways. This narrowing makes it more difficult for air to move in and out of the lungs, causing increased resistance and potential respiratory distress.

2. Increased Diameter: This option would refer to a widening of the airways, typically achieved through bronchodilation, which is the opposite of bronchoconstriction.

Conclusion

Given the definition and mechanism of bronchoconstriction, the correct answer to the multiple-choice question is:

Answer: Decreased diameter

This correctly reflects the physiological effect of bronchoconstriction on the airways.