Most C fibers produce a pain enhancer called substance P thatstimulates free nerve endings at the site of the injury and also increases pain messages within the spinal cord.

Question

Quizplus · Accepted Answer

This statement is true. Substance P is a neuropeptide released by C fibers that enhances pain signaling and increases sensitivity to painful stimuli. It also plays a role in inflammation and the immune response.

Most C Fibers Produce a Pain Enhancer Called Substance P