Gaps between myelin sheaths on the axon of a neuron
"Nodes of Ranvier" redirects here. For the band, see Nodes of Ranvier (band).
Node of Ranvier
Drawing of a peripheral nerve axon (labeled "axis cylinder"), showing a node of Ranvier along with other features
Nodes of Ranvier
Details
System
Nervous system
Location
Myelinated axon of a nerve
Identifiers
Latin
incisura myelini
MeSH
D011901
TH
H2.00.06.2.03015
Anatomical terms of microanatomy
[edit on Wikidata]
In neuroscience and anatomy, nodes of Ranvier (/ˈrɑːnvieɪ/RAHN-vee-ay),[1][2] also known as myelin-sheath gaps, occur along a myelinated axon where the axolemma is exposed to the extracellular space. Nodes of Ranvier are uninsulated and highly enriched in ion channels, allowing them to participate in the exchange of ions required to regenerate the action potential. Nerve conduction in myelinated axons is referred to as saltatory conduction (from Latin saltus 'leap, jump') due to the manner in which the action potential seems to "jump" from one node to the next along the axon. This results in faster conduction of the action potential.
^"node of Ranvier". Lexico UK English Dictionary. Oxford University Press. Archived from the original on October 16, 2021.
^"node of Ranvier". Merriam-Webster.com Dictionary.
In neuroscience and anatomy, nodesofRanvier (/ˈrɑːnvieɪ/ RAHN-vee-ay), also known as myelin-sheath gaps, occur along a myelinated axon where the axolemma...
called nodesofRanvier. At the nodesofRanvier, which are approximately one thousandth of a mm in length, the axon's membrane is bare of myelin. Myelin's...
myelin sheath known as nodesofRanvier occur at evenly spaced intervals. The myelination enables an especially rapid mode of electrical impulse propagation...
parameterized Lymph node, an immune system organ used to store white blood cells NodeofRanvier, periodic gaps in the insulating myelin sheaths of myelinated...
along unmyelinated axons as well as along myelinated axons, engulfing nodesofRanvier. Recently, OPCs have been shown to reside in close contact with NG2-expressing...
polyneuropathy. Some variants of CIDP present autoimmunity against proteins of the nodeofRanvier. These variants comprise a subgroup of inflammatory neuropathies...
each nodeofRanvier. The channels are highly concentrated in sensory and motor axons in the peripheral nervous system and cluster at the nodes in the...
synapses must be active at the same time. Dendrite Soma Axon Nucleus NodeofRanvier Axon terminal Schwann cell Myelin sheath Historically, calcium-sensitive...
strengthen myelin membranes internally. In concert with the formation of axonal nodesofRanvier, the myelin sheath's edges form paranodal loops. The basic helix–loop–helix...
motor axonal degeneration with antibody-mediated attacks of motor nerves and nodesofRanvier.[citation needed] A link to Campylobacter jejuni was suspected...
contains two main categories or types of cells: neurons and glial cells. Dendrite Soma Axon Nucleus NodeofRanvier Axon terminal Schwann cell Myelin sheath...
neuropathy while high titers of anti-GM1 were more frequent indicating that GD1a possibly targets the axolemma and nodesofRanvier most of the Ab+ patients had...
of action potentials (nerve impulses) are triggered at the first nodeofRanvierof the sensory neuron. Once threshold is reached, the magnitude of the...
Soma Axon Nucleus NodeofRanvier Axon terminal Schwann cell Myelin sheath Multiple sclerosis is an inflammatory demyelinating disease of the CNS in which...
channels of the nodeofRanvier." J. Gen. Physiol. 59 388-400. L. O. Randall, W. G. Peterson and G. Lehmann (1949). "The ganglionic blocking actions of thiophanium...
Purkinje Purkinje fibres – Jan E. Purkinje Pimenta's Point NodeofRanvier – Louis-Antoine Ranvier Rathke's pouch – Martin Heinrich Rathke Reichert cartilage – Karl...
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