Nerve Fibers, Unmyelinated

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.

Year introduced: 2003

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Tree Number(s): A08.675.542.756, A11.671.501.756

MeSH Unique ID: D036421

Entry Terms:

• Nerve Fiber, Unmyelinated
• Unmyelinated Nerve Fiber
• Unmyelinated Nerve Fibers
• C Fibers
• C Fiber

Previous Indexing:

• Nerve Fibers (1976-2002)

See Also:

• Gray Matter

All MeSH Categories
Anatomy Category
Nervous System
Neurons
Nerve Fibers
Nerve Fibers, Unmyelinated

All MeSH Categories
Anatomy Category
Cells
Neurons
Nerve Fibers
Nerve Fibers, Unmyelinated