ONKI3 | Medical Subject Headings

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The way property values are displayed: value/row values side by side

The way concept relations are shown: separately in hierarchy

Nerve Fibers, Unmyelinated

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Hierarchy:	Medical Subject Headings (MeSH) ∟ Cells ∟ Neurons ∟ Nerve Fibers ∟ Nerve Fibers, Unmyelinated 6 coordinate concepts ∟ Adrenergic Fibers \| ∟ Autonomic Fibers, Postganglionic \| ∟ Autonomic Fibers, Preganglionic \| ∟ Axons \| ∟ Cholinergic Fibers \| ∟ Nerve Fibers, Myelinated Medical Subject Headings (MeSH) ∟ Nervous System ∟ Neurons ∟ Nerve Fibers ∟ Nerve Fibers, Unmyelinated 6 coordinate concepts ∟ Adrenergic Fibers \| ∟ Autonomic Fibers, Postganglionic \| ∟ Autonomic Fibers, Preganglionic \| ∟ Axons \| ∟ Cholinergic Fibers \| ∟ Nerve Fibers, Myelinated X
Broader terms:	Medical Subject Headings (MeSH) ∟ Cells ∟ Neurons ∟ Nerve Fibers ∟ Nerve Fibers, Unmyelinated Medical Subject Headings (MeSH) ∟ Nervous System ∟ Neurons ∟ Nerve Fibers ∟ Nerve Fibers, Unmyelinated Nerve Fibers > Neurons > Cells > Medical Subject Headings (MeSH) Nerve Fibers > Neurons > Nervous System > Medical Subject Headings (MeSH) X
History note:	Nerve Fibers (1976-2002)X
historyNote*:	2003; for C FIBERS use NERVE FIBERS 1977-2002 X
publicMeSHNote*:	2003; for C FIBERS see NERVE FIBERS 1977-2002 X
Scope note:	A class of nerve fibers as defined by their structure, specifically the nerve sheath arrangement. The AXONS of the unmyelinated nerve fibers are small. The axons to SCHWANN CELLS ratio is greater in the unmyelinated nerve fibers than that in the myelinated fiber (NERVE FIBERS, MYELINATED) which is 1:1. Usually several axons are surrounded by a single Schwann cell in the unmyelinated nerve fibers. Therefore, each unmyelinated fiber is not completely covered by the MYELIN SHEATH formed by the Schwann cell. Unmyelinated nerve fibers conduct impulses at low velocities. They represent the majority of peripheral sensory and autonomic fibers. They are also found in the spinal cord and brain. X
activeMeSHYear*:	2003 \| 2004 \| 2005 \| 2006 \| 2007X
dateCreated*:	2002-07-03X
dateEstablished*:	2003-01-01X
recordAuthorizer*:	sjnX
recordMaintainer*:	lktX
recordOriginator*:	lktX
Type:	Concept X
Coordinate terms:	Adrenergic Fibers \| Autonomic Fibers, Postganglionic \| Autonomic Fibers, Preganglionic \| Axons \| Cholinergic Fibers \| Nerve Fibers, Myelinated X
URI:	X
Labels and equivalent concepts:	Myeliinitupettomat hermosäikeet (fi) Myelinisoitumattomat hermosäikeet (fi, replaced) Myelinisoitumaton hermosäie (fi, replaced) Myeliinitupeton hermosäie (fi, replaced) Nervtrådar, icke-myeliniserade (sv) Nervfibrer, icke-myeliniserade (sv, replaced) X
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