The β₂-adrenoreceptor agonists albuterol and levalbuterol are used to treat _______ because they _______. A) asthma and COPD; constrict blood vessels in the bronchial lining and reduce congestion B) asthma and COPD; relax the bronchial muscles and create a wider airway C) colds; constrict blood vessels in the nose and reduce congestion D) hypertension; decrease the rate of contraction of the heart

Question

Quizplus · Accepted Answer

Albuterol and levalbuterol are β2-adrenoreceptor agonists, which means they relax the smooth muscles in the bronchioles, creating a wider airway that makes breathing easier. This is why they are used to treat asthma and COPD. They do not constrict blood vessels or decrease the rate of contraction of the heart, as stated in options A and D. They also do not relieve congestion in the nose, as stated in option C.

The β2-Adrenoreceptor Agonists Albuterol and Levalbuterol Are Used to Treat

The β₂-Adrenoreceptor Agonists Albuterol and Levalbuterol Are Used to Treat