An inhaler used to treat airway constriction in asthma or allergy might contain a drug that
A)activates β1 adrenergic receptors.
B)activates β2 adrenergic receptors.
C)blocks muscarinic cholinergic receptors.
D)activates β1 or β2 adrenergic receptors.
E)activates β2 adrenergic receptors or blocks muscarinic cholinergic receptors.

Question

Quizplus · Accepted Answer

Inhalers for asthma often contain drugs that activate β2 adrenergic receptors to relax bronchial muscles or block muscarinic receptors to reduce bronchoconstriction.

An Inhaler Used to Treat Airway Constriction in Asthma or Allergy