________ is distinguished by having reversible airway narrowing and airway hyperreactivity; and is most commonly characterized as an inflammatory process.
A)Asthma
B)Emphysema
C)Chronic bronchitis
D)Bronchiectasis

Question

Quizplus · Accepted Answer

Asthma is characterized by reversible airway narrowing due to bronchoconstriction, inflammation, and edema. Airway hyperreactivity is also a hallmark of asthma, which means that the airways are more sensitive to various stimuli, such as allergens, exercise, stress, or respiratory infections. This leads to symptoms such as wheezing, coughing, chest tightness, and shortness of breath. The inflammation in asthma is predominantly caused by cytokines, eosinophils, and mast cells, which may be triggered by environmental or genetic factors. Emphysema is primarily a disease of the alveoli, while chronic bronchitis involves chronic cough and sputum production without reversible airway obstruction. Bronchiectasis is a condition of irreversible dilatation and distortion of the bronchi, usually due to recurrent infections or other insults.

________ Is Distinguished by Having Reversible Airway Narrowing and Airway