According to the Gate-Control Theory of Pain, the Release of Endorphins

Multiple Choice

According to the gate-control theory of pain, the release of endorphins by the brain may be responsible for:

A) the feeling of phantom pain that is sometimes experienced in amputated limbs
B) the effectiveness of placebos in reducing the perception of pain
C) an increase in the activity of small fibers, opening pain gates in the spinal cord
D) a decrease in the activity of large fibers, closing pain gates in the spinal cord