Researchers studying opiates such as morphine were surprised that they fit exactly into neural receptors.The reason is that the brain produces its own version of an opiate for pain relief,called:
A)norepinephrine.
B)endorphins.
C)serotonin.
D)opium.

Question

Quizplus · Accepted Answer

The brain produces its own version of an opiate for pain relief called endorphins. This is why opiates such as morphine fit exactly into neural receptors - because these receptors are designed to recognize and respond to endorphins.

Researchers Studying Opiates Such as Morphine Were Surprised That They