Derek dropped a hammer on his foot and shrieked a split second later at the intense pain from a newly broken toe.The almost instantaneous pain signals traveled along

Question

Quizplus · Accepted Answer

Thick, myelinated A-delta fibers are responsible for the rapid transmission of pain signals from the site of injury to the brain, resulting in the almost instantaneous experience of pain. Thin, unmyelinated C fibers transmit slower, duller, and more persistent pain signals. Gated endorphin pathways in the hypothalamus and periacqueductal gray neurons in the midbrain are involved in pain modulation and inhibition, rather than pain transmission.

Derek Dropped a Hammer on His Foot and Shrieked a Split