Group C nerve fiber
Group C nerve fibers are one of three classes of nerve fiber in the central nervous system (CNS) and peripheral nervous system (PNS). The C group fibers are unmyelinated and have a small diameter and low conduction velocity, whereas Groups A and B are myelinated. Group C fibers include postganglionic fibers in the autonomic nervous system (ANS), and nerve fibers at the dorsal roots (IV fiber). These fibers carry sensory information.
| Group C nerve fiber | |
|---|---|
C fiber not labeled, but substantia gelatinosa of Rolando is Rexed lamina II, labeled at upper left. | |
| Details | |
| Location | Central nervous system and peripheral nervous system |
| Function | nerve fiber |
| Anatomical terms of neuroanatomy | |
Damage or injury to nerve fibers causes neuropathic pain. Capsaicin activates C fibre vanilloid receptors, giving chili peppers a hot sensation.
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