A class of nerve fibers as defined by their nerve sheath arrangement. The AXONS of the unmyelinated nerve fibers are small in diameter and usually several are surrounded by a single MYELIN SHEATH. They conduct low-velocity impulses, and represent the majority of peripheral sensory and autonomic fibers, but are also found in the BRAIN and SPINAL CORD.

DUI

D036421 MeSH Browser

CUI

M0409789

Previous indexing

Nerve Fibers (1976-2002)

History note

2003; for C FIBERS use NERVE FIBERS 1977-2002

Public note

2003; for C FIBERS see NERVE FIBERS 1977-2002