A substance which is used to constrict blood vessels in the vicinity where a local anesthetic is injected is _____.
A)dopamine
B)serotonin
C)epinephrine
D)N-methylamphetamine

Question

Quizplus · Accepted Answer

Epinephrine is commonly added to local anesthetics to constrict blood vessels in the area, which helps to prolong the effect of the anesthetic by slowing its absorption into the bloodstream. This also reduces bleeding in the area being operated on.

A Substance Which Is Used to Constrict Blood Vessels in the Vicinity