Pain relief medication derived from the opium plant.

Pain relief medication derived from the opium plant.

• A. Atropine sulfate
• B. Morphine
• C. Calcium chloride
• D. Sodium bicarbonate

Answer: (B)

Morphine is the pain-relief medication derived from the opium plant. It is an opioid analgesic obtained from opium poppy latex and works by activating mu-opioid receptors in the brain and spinal cord to dampen pain signals. This potent effect makes it a common choice for severe pain when nonopioids aren’t enough, but it also requires careful monitoring because it can depress respiration and lower blood pressure. The other substances listed do not fit: atropine sulfate is an anticholinergic used for bradycardia, calcium chloride is a calcium supplement, and sodium bicarbonate is an alkalinizing agent; none are derived from opium or primarily used for analgesia.

Morphine is the pain-relief medication derived from the opium plant. It is an opioid analgesic obtained from opium poppy latex and works by activating mu-opioid receptors in the brain and spinal cord to dampen pain signals. This potent effect makes it a common choice for severe pain when nonopioids aren’t enough, but it also requires careful monitoring because it can depress respiration and lower blood pressure. The other substances listed do not fit: atropine sulfate is an anticholinergic used for bradycardia, calcium chloride is a calcium supplement, and sodium bicarbonate is an alkalinizing agent; none are derived from opium or primarily used for analgesia.