Codeine, morphine, and heroin produce pain relief and a sense of euphoria. They mimic the effects of the body's natural opioids, which include

Question

Quizplus · Accepted Answer

Endorphins and enkephalins are the body's natural opioids that produce pain relief and a sense of well-being. Codeine, morphine, and heroin mimic the effects of these natural opioids. Oxycodone and oxycontin are semi-synthetic opioids, while dopamine and ketamine are not opioids at all. Norepinephrine and epinephrine are neurotransmitters that are involved in the body's stress response, but are not opioids.

Codeine, Morphine, and Heroin Produce Pain Relief and a Sense