Chemicals that can inhibit or block sensations of pain are:
A) serotonin.
B) endorphins.
C) norepinephrine.
D) GABA.

Question

Quizplus · Accepted Answer

Endorphins are natural chemicals produced by the body that can provide pain relief similar to opioids. They bind to the same receptors in the brain and spinal cord as opioids, reducing the transmission of pain signals. Serotonin and norepinephrine are neurotransmitters that can affect pain perception, but they do not directly inhibit or block pain sensations. GABA is an inhibitory neurotransmitter that can have a modulatory effect on pain signaling, but it is not a primary pain-relieving chemical. Therefore, B is the best choice.

Chemicals That Can Inhibit or Block Sensations of Pain Are