A depressant drug class including morphine, codeine, heroin, oxycontin, and vicodin.

• A. Detoxification
• B. Sleep apnea
• C. Physical Dependence
• D. Opioids

Answer: (D)

Opioids are a depressant drug class that includes morphine, codeine, heroin, oxycodone (OxyContin), and hydrocodone (Vicodin). They relieve pain and produce sedation by binding to opioid receptors in the brain and spinal cord, and they can slow breathing, which is a hallmark of their depressant effect. The listed drugs are classic examples of opioids, so this category best fits them all. Detoxification is a withdrawal-management process, sleep apnea is a sleep disorder, and physical dependence is a physiological state that can develop with many substances, not the drug class that encompasses these drugs.