WordNet
- beyond or distal to a ganglion (referring especially to the unmyelinated fibers that originate from cells in autonomic ganglia)
PrepTutorEJDIC
- 神経単位,神経細胞,ニューロン,ノイロン
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/03/27 05:44:59」(JST)
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Postganglionic fibers |
Sympathetic connections of the ciliary and superior cervical ganglia.
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Details |
Identifiers |
Latin |
neurofibrae postganglionicae |
Dorlands
/Elsevier |
n_06/12568789 |
TA |
A14.2.00.010 |
FMA |
76569 |
Anatomical terms of neuroanatomy
[edit on Wikidata]
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In the autonomic nervous system, fibers from the ganglion to the effector organ are called postganglionic fibers.
Contents
- 1 Neurotransmitters
- 2 See also
- 3 References
- 4 External links
Neurotransmitters
The neurotransmitters of postganglionic fibers differ:
- In the parasympathetic division, neurons are cholinergic (that is, acetylcholine is the primary neurotransmitter).
- In the sympathetic division, neurons are mostly adrenergic (that is, epinephrine and norepinephrine function as the primary neurotransmitters). Two exceptions to this rule are the sympathetic innervation of sweat glands and arrectores pilorum muscles where the neurotransmitter at both pre and post ganglionic synapses is acetylcholine and the vessels in the renal cortex where dopamine is used as the main neurotransmitter. Another exception is the sympathetic innervation of the medulla of the adrenal glands, which is accomplished by preganglionic fibers, and subsequently uses acetylcholine as a neurotransmitter. The cells of the adrenal medulla are actually modified postganglionic neurons which secrete epinephrine and norepinephrine directly into the blood stream rather than into a synapse.[1]
- In both divisions of the autonomic nervous system, postganglionic neurons express nicotinic acetylcholine receptors to receive signals from preganglionic neurons.[2]
See also
- Preganglionic fibers
- Nerve fiber
References
- ^ Noback, Charles; David A. Ruggiero, Robert J. Demarest, Norman L. Strominger (2005). The Human Nervous System: Structure and Function (6th ed.). New Jersey: Humana Press. ISBN 978-1588290403.
- ^ Costanzo, Linda (2014). BRS Physiology (6th ed.). LWW. ISBN 9781451187953.
External links
Nervous tissue
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CNS |
Tissue Types |
- Grey matter
- White matter
- Projection fibers
- Association fiber
- Commissural fiber
- Lemniscus
- Funiculus
- Fasciculus
- Decussation
- Commissure
- Neuropil
- Meninges
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Cell Types |
Neuronal |
- Pyramidal
- Purkinje
- Granule
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Glial |
insulating: |
- Myelination: Oligodendrocyte
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other |
- Astrocyte
- Ependymal cells
- Microglia
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PNS |
General |
- Posterior
- Anterior
- Ramus communicans
- Autonomic ganglion (Preganglionic nerve fibers
- Postganglionic nerve fibers)
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Connective tissues |
- epineurium
- perineurium
- endoneurium
- nerve fascicle
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Neuroglia |
- Myelination: Schwann cell
- Neurolemma
- Myelin incisure
- Node of Ranvier
- Internodal segment
- Satellite glial cell
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Neurons/
nerve fibers |
Parts |
Soma |
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Axon |
- Axon terminals
- Axoplasm
- Axolemma
- Neurofibril/neurofilament
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Dendrite |
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- Nissl body
- Dendritic spine
- Apical dendrite/Basal dendrite
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Types |
- Bipolar
- Unipolar
- Pseudounipolar
- Multipolar
- Interneuron
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Afferent nerve fiber/
Sensory nerve |
- GSA
- GVA
- SSA
- SVA
- fibers
- Ia
- Ib or Golgi
- II or Aβ
- III or Aδ or fast pain
- IV or C or slow pain
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Efferent nerve fiber/
Motor nerve |
- GSE
- GVE
- SVE
- Upper motor neuron
- Lower motor neuron
- α motorneuron
- β motorneuron
- γ motorneuron
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Termination |
Synapse |
- Electrical synapse/Gap junction
- Chemical synapse
- Synaptic vesicle
- Active zone
- Postsynaptic density
- Ribbon synapse
- Neuromuscular junction
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Sensory receptors |
- Meissner's corpuscle
- Merkel nerve ending
- Pacinian corpuscle
- Ruffini ending
- Muscle spindle
- Free nerve ending
- Olfactory receptor neuron
- Photoreceptor cell
- Hair cell
- Taste bud
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UpToDate Contents
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English Journal
- BMP7-induced dendritic growth in sympathetic neurons requires p75(NTR) signaling.
- Courter LA1, Shaffo FC2, Ghogha A2, Parrish DJ3, Lorentz CU3, Habecker BA3, Lein PJ1,2.
- Developmental neurobiology.Dev Neurobiol.2016 Sep;76(9):1003-13. doi: 10.1002/dneu.22371. Epub 2016 Jan 22.
- Dendritic morphology is a critical determinant of neuronal connectivity, and in postganglionic sympathetic neurons, tonic activity correlates directly with the size of the dendritic arbor. Thus, identifying signaling mechanisms that regulate dendritic arborization of sympathetic neurons is important
- PMID 26663679
- Individual sympathetic postganglionic neurons coinnervate myenteric ganglia and smooth muscle layers in the gastrointestinal tract of the rat.
- Walter GC1, Phillips RJ1, McAdams JL1, Powley TL1.
- The Journal of comparative neurology.J Comp Neurol.2016 Sep 1;524(13):2577-603. doi: 10.1002/cne.23978. Epub 2016 Feb 24.
- A full description of the terminal architecture of sympathetic axons innervating the gastrointestinal (GI) tract has not been available. To label sympathetic fibers projecting to the gut muscle wall, dextran biotin was injected into the celiac and superior mesenteric ganglia (CSMG) of rats. Nine day
- PMID 26850701
Japanese Journal
- 先天性無痛無汗症の分子病態からみた神経成長因子と痛みの生理学 : 内感覚と交感神経と情動の関係
- Neurobiology of pain, interoception and emotional response: lessons from nerve growth factor-dependent neurons
Related Links
- Neurons are highly specialized cells having two characteristic properties: irritability, which means that they are capable of responding to stimulation; and conductivity, which means that they are able to conduct impulses. They are ...
- Learn more about postganglionic neurons in the Boundless open textbook. In the autonomic nervous system, fibers from the ganglion to the effector organ are called postganglionic fibers. ... Key Points Postganglionic fibers in the ...
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- 関
- nerve、nervi、nervous、nervus、neural、neuron