Question

What is the action of the epinephrine in the epipen?

A.Epinephrine counteracts the histamine molecule directly
B.Epinephrine inhibits the mast cells
C.Epinephrine (or adrenalin) dilates blood vessels, restoring normal blood pressure and lung function
D.Epinephrine constricts blood vessels, restoring normal blood pressure and lung function

Answer 1

Epinephrine in an EpiPen constricts blood vessels to raise blood pressure and relax bronchial muscles, alleviating symptoms of anaphylaxis.

Step-by-step explanation:

The action of the epinephrine in an EpiPen is to constrict blood vessels, which helps to restore normal blood pressure and lung function during an anaphylactic reaction. When a person is experiencing anaphylaxis, a life-threatening allergic reaction, their blood pressure can drop and airways can constrict. The epinephrine released from an EpiPen works to raise blood pressure and relax bronchial smooth muscles, allowing for improved breathing and the prevention of potentially fatal consequences.

When a person experiences severe allergic reactions or anaphylaxis, their blood pressure drops and their bronchial smooth muscle contracts. Epinephrine, also known as adrenaline, works by constricting the blood vessels and relaxing the bronchial smooth muscle, leading to increased blood pressure and improved lung function.