Asthma is characterized by _____ airway obstruction and is associated with reduction in _____ airflow.

Question

Quizplus · Accepted Answer

Asthmatics trap air due to constriction of bronchiolar smooth muscle.A few hours later,inflammation occurs,resulting in an increase in secretions in the lungs and swelling in the bronchioles.Asthma is characterized by reversible airway obstruction and is associated with a reduction in expiratory airflow.The reversible airway obstruction is in contrast to chronic obstructive pulmonary disease (COPD),which is characterized by irreversible airway obstruction,which occurs with either chronic bronchitis or emphysema.

Asthma Is Characterized by _____ Airway Obstruction and Is Associated