Final answer:
Morphine, heroin, and codeine imitate the action of opioid receptors in your body.
Step-by-step explanation:
Morphine, heroin, and codeine imitate the action of opioid receptors in your body.
Opioid drugs, such as morphine, codeine, and heroin, act by attaching to specific opioid receptors in the brain, spinal cord, and gastrointestinal tract. These receptors are responsible for reducing pain and producing euphoria.
By imitating the action of these receptors, opioids can change the way a person experiences pain and produce analgesic effects.