The effectiveness of morphine in relieving pain is explained by its
A) mood elevating effects.
B) chemical similarity to endorphins.
C) capacity to inhibit free nerve endings.
D) tendency to open spinal gates.

Question

Quizplus · Accepted Answer

Morphine is a highly potent pain reliever that works by binding to the same opioid receptors in the brain that are normally activated by endorphins, which are endogenous painkillers. The chemical similarity between morphine and endorphins is what makes morphine so effective in relieving pain.

The Effectiveness of Morphine in Relieving Pain Is Explained by Its