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)activates muscarinic cholinergic receptors.
D)blocks β₂ adrenergic receptors.
E)activates β₂ adrenergic receptors or activates muscarinic cholinergic receptors.

Question

Quizplus · Accepted Answer

An inhaler used to treat airway constriction in asthma or allergy would contain a drug that activates β₂ adrenergic receptors. This is because activation of β₂ receptors results in relaxation of smooth muscle in the airways, leading to bronchodilation and increased airflow. It is also important to note that some inhalers may contain a combination of drugs that activate β₂ receptors and/or inhibit muscarinic cholinergic receptors.

An Inhaler Used to Treat Airway Constriction in Asthma or Allergy