- 同
- 後根
WordNet
- plant by the roots
- (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground
- a number that, when multiplied by itself some number of times, equals a given number
- cause to take roots
- take root and begin to grow; "this plant roots quickly"
- (linguistics) the form of a word after all affixes are removed; "thematic vowels are part of the stem" (同)root word, base, stem, theme, radical
- the part of a tooth that is embedded in the jaw and serves as support (同)tooth_root
- come into existence, originate; "The problem roots in her depression"
- belonging to or on or near the back or upper surface of an animal or organ or part; "the dorsal fin is the vertical fin on the back of a fish and certain marine mammals"
- the condition of belonging to a particular place or group by virtue of social or ethnic or cultural lineage; "his roots in Texas go back a long way"; "he went back to Sweden to search for his roots"; "his music has African roots"
- the process of putting forth roots and beginning to grow
PrepTutorEJDIC
- 《しばしば複数形で》『根』 / 『根元』 / 《the~》『根源』,根本;根底 / 《複数形で》(その人の根底にある)ある場所との根源的なつながり / (数学で)根,ルート / (派生語の)語根(例えばrootlessの中のroot) / 〈植物〉‘を'『根づかせる』 / 《しばしば受動態で》(根をおろしたように)(…に)…‘を'『定着させる』『+『名』+『to』(『in』)+『名』》 / (…に)『根を下ろす』,定着する《+『in』(『on』,『to』)+『名』》
- 〈豚などが〉(…をあさって)鼻で地面を掘る《+『about』(『around』)『for』+『名』》 / (…を捜して)〈人が〉かき回す《+『about for』+『名』》
- (…を)声援する,(…の)成功を願う《+『for』+『名』》
- (植物の)背部の,背の
- 《補語にのみ用いて》(植物が)根づいた / (考えなどが)定着した
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/04/17 11:26:30」(JST)
[Wiki en表示]
Dorsal root of spinal nerve |
The formation of the spinal nerve from the dorsal and ventral roots
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Details |
Identifiers |
Latin |
radix posterior |
MeSH |
A08.800.800.720.725 |
Dorlands
/Elsevier |
r_12/12709389 |
TA |
A14.2.00.030 |
FMA |
5980 |
Anatomical terminology
[edit on Wikidata]
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The dorsal root of spinal nerve (or posterior root of spinal nerve) is one of two "roots" which emerge from the spinal cord. It emerges directly from the spinal cord, and travels to the dorsal root ganglion. Nerve fibres with the ventral root then combine to form a spinal nerve. The dorsal root transmits sensory information, forming the afferent sensory root of a spinal nerve.
Contents
- 1 Structure
- 2 Additional images
- 3 See also
- 4 External links
Structure
The root emerges from the posterior part of the spinal cord and travel to the dorsal root ganglion. This contains the cell bodies of the nerve fibres contained in the root.
The lateral division of the dorsal root contains lightly myelinated and unmyelinated fibres of small diameter. These carry pain and temperature sensation. These fibers cross through the anterior white commissure to form the anterolateral system in the lateral funiculus.
The medial division of the dorsal root contains myelinated fibres of larger diameter. These transmit information of discriminative touch, pressure, vibration, and conscious proprioception originating from spinal levels C2 through S5. These fibers are pushed in towards the posterior median sulcus to form the gracile fasciculus and the cuneate fasciculus of the posterior column–medial lemniscus pathway. If the dorsal root of a spinal nerve were severed it would lead to numbness in certain areas of the body.
Additional images
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A spinal nerve with its anterior and posterior roots.
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Diagrammatic transverse section of the medulla spinalis and its membranes.
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A portion of the spinal cord, showing its right lateral surface. The dura is opened and arranged to show the nerve roots.
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Scheme showing structure of a typical spinal nerve.
See also
External links
- Anatomy figure: 02:04-06 at Human Anatomy Online, SUNY Downstate Medical Center - "Superior view of a section through the spinal cord within the vertebral foramen."
- Anatomy Atlases - Microscopic Anatomy, plate 06.114 - "Spinal Root Nerve Fibers"
- Dorsal Root - Cell Centered Database
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
全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.
English Journal
- Beneficial properties of maraviroc on neuropathic pain development and opioid effectiveness in rats.
- Kwiatkowski K1, Piotrowska A1, Rojewska E1, Makuch W1, Jurga A1, Slusarczyk J2, Trojan E2, Basta-Kaim A2, Mika J3.
- Progress in neuro-psychopharmacology & biological psychiatry.Prog Neuropsychopharmacol Biol Psychiatry.2016 Jan 4;64:68-78. doi: 10.1016/j.pnpbp.2015.07.005. Epub 2015 Jul 16.
- Targeting chemokine signaling pathways is crucial in neuropathy development. In this study, we investigated the influence of chronic administration of maraviroc (CCR5 antagonist) on nociception and opioid effectiveness during neuropathy, which develops as a result of chronic constriction injury (CCI
- PMID 26190414
- Efficient Gene Suppression in Dorsal Root Ganglia and Spinal Cord Using Adeno-Associated Virus Vectors Encoding Short-Hairpin RNA.
- Enomoto M1,2, Hirai T3,4, Kaburagi H5, Yokota T6.
- Methods in molecular biology (Clifton, N.J.).Methods Mol Biol.2016;1364:277-90. doi: 10.1007/978-1-4939-3112-5_22.
- RNA interference is a powerful tool used to induce loss-of-function phenotypes through post-transcriptional gene silencing. Small interfering RNA (siRNA) molecules have been used to target the central nervous system (CNS) and are expected to have clinical utility against refractory neurodegenerative
- PMID 26472458
- Into the groove: instructive silk-polypyrrole films with topographical guidance cues direct DRG neurite outgrowth.
- Hardy JG1,2,3, Khaing ZZ1,2, Xin S1, Tien LW3, Ghezzi CE3, Mouser DJ2, Sukhavasi RC2, Preda RC3, Gil ES3, Kaplan DL3, Schmidt CE1,2.
- Journal of biomaterials science. Polymer edition.J Biomater Sci Polym Ed.2015 Dec;26(17):1327-42. doi: 10.1080/09205063.2015.1090181. Epub 2015 Sep 28.
- Instructive biomaterials capable of controlling the behaviour of the cells are particularly interesting scaffolds for tissue engineering and regenerative medicine. Novel biomaterials are particularly important in societies with rapidly aging populations, where demand for organ/tissue donations is gr
- PMID 26414407
Japanese Journal
- 後根神経節へ局所投与された交感神経遮断薬はアドレナリンα2受容体を介して神経根絞扼モデルラットの疼痛行動を抑制する
- Journal of musculoskeletal pain research = 日本運動器疼痛学会誌 7(2), 206-212, 2015
- NAID 40020614528
- Analgesic Effect of Ilex paraguariensis Extract on Postoperative and Neuropathic Pain in Rats
- Analgesic effect of Ilex paraguariensis extract on postoperative and neuropathic pain in rats
Related Links
- dorsal root n. The sensory root of a spinal nerve. Also called posterior root. dorsal root Etymology: L, dorsalis, back; AS, rot the sensory component or posterior root of a spinal nerve, attached centrally to the spinal cord. root [roōt] 1. the descending and subterranean part of a plant.
- a nerve fiber bundle that emerges from either side of the spinal cord and joins with a complementary bundle to form each spinal nerve in the series of spinal nerves: the root at the rear of the spinal cord (dorsal root or sensory root) conveys sensations to the central nervous system, and the root at the front ...
Related Pictures
★リンクテーブル★
[★]
- 英
- dorsal root, posterior root
- ラ
- radix dorsalis, radix posterior
- 関
- 脊髄神経
[★]
前根
- 関
- anterior root、dorsal root、spinal nerve root、spinal root
[★]
脊髄神経根
- 関
- dorsal root、spinal root、ventral root
[★]
脊髄根
- 関
- dorsal root、spinal nerve root、ventral root
[★]
後根
- 関
- dorsal root
[★]
[★]
- (神経の)神経根、(植物の)根、根菜類、(舌・耳・翼・指などの)付け根、根元、(歯・毛・つめなどの)根、根源、根本、核心、基礎、ルーツ
[★]
- 関
- dorsally、dorsum、notal