Central sensitization

I got 3 of 5 scores on this quiz (my answers are: 1) d, 2) c.,3) a, 4) d,5) c ) ) 1. Often, the intensity and duration of pain far exceed the underlying pathology. This phenomenon of central sensitization involves all of the following except a. Inflammatory soup at the site of injury b. Properties of A-delta and C fibers c. Changes in the central pathways d. Emotional and cognitive factors related to the patient.   2. The physiologic explanation of referred pain relates to a. The fibers relating to pain converge on motor neurons b. Convergence of pain fibers at the level of thalamus c. Convergence of pain fibers from the somatic system and viscera at a single spinal segment d. Divergence of pain fibers from the somatic system and viscera from a single spinal segment   3. The pain fibers that predominantly transmit slow pain are a. Unmyelinated C fibers b. Myelinated C fibers c. Myelinated A-Beta fibers d. Myelinated A-delta fibers.   4. Pain is known to affect both feedback and feedforward mechanisms of movement control. Which of the following is NOT true about feedforward systems? a. Feedforward systems rely on planning and prediction of action and consequences of action b. Feedforward systems lead to slower, more controlled movements. c. To optimally engage the feedforward system, task-oriented practice is necessary. d. To optimally engage the feedforward systems, task practice at faster speeds is indicated.   5. Neuroscience education for chronic pain relief likely has analgesic effects predominantly through: a. Pain-gate mechanism b. Opioid-related mechanism c. Cognitive mechanisms d. Spinal segmental mechanisms