When Applying the Central Biasing Model of Pain Control, What

When applying the central biasing model of pain control, what statement can be correctly referenced?

A) A? and C fibers are trying to override the second-order level neurons to block pain.
B) A? and A? fibers become efferent fibers and to assist with inhibiting the pain information to reach the dorsal horn of the spinal cord.
C) Noxious stimulation of nociceptors stimulate the release of opiate-like chemicals to block the pain.
D) Previous experiences influence the perception of pain along efferent descending pathways causing neurotransmitters to be released to block pain.
E) Second-order afferent fibers block off the pathways of the A? and A? fibers before reaching the second-order afferent neurons.