Kevin takes a highly addictive drug that activates the brain's painkilling and mood-altering systems. Kevin may have taken any of the following drugs except

Question

Quizplus · Accepted Answer

Cocaine is a stimulant that primarily affects the brain's reward system and increases levels of dopamine, but it does not primarily activate the brain's painkilling systems like opioids such as morphine, heroin, and opium do.

Kevin Takes a Highly Addictive Drug That Activates the Brain's