WordNet

any bundle of nerve fibers running to various organs and tissues of the body (同)nervus
of or relating to or near the part of the back between the ribs and the hipbones; "lumbar vertebrae"
control of your emotions; "this kind of tension is not good for my nerves"

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〈C〉『神経』 / 〈C〉《複数形で》『神経過敏』,いらだち / 〈U〉『勇気』,度胸(courage) / 〈U〉《時にa ~》厚かましさ,ずぶとさ;無礼 / 〈C〉葉脈;(昆虫の)翅脈(しみゃく) / 〈人,特に自分〉‘に'力を与える,‘を'元気づける
腰の,腰部の

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/03/12 19:53:51」(JST)

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The lumbar nerves are the five spinal nerves emerging from the lumbar vertebrae. They are divided into posterior and anterior divisions.

Posterior divisions

The medial branches of the posterior divisions of the lumbar nerves run close to the articular processes of the vertebræ and end in the Multifidus.

The lateral branches supply the Sacrospinalis.

The upper three give off cutaneous nerves which pierce the aponeurosis of the Latissimus dorsi at the lateral border of the Sacrospinalis and descend across the posterior part of the iliac crest to the skin of the buttock, some of their twigs running as far as the level of the greater trochanter.

Anterior divisions

The anterior divisions of the lumbar nerves (rami anteriores) increase in size from above downward.

They are joined, near their origins, by gray rami communicantes from the lumbar ganglia of the sympathetic trunk.

These rami consist of long, slender branches which accompany the lumbar arteries around the sides of the vertebral bodies, beneath the Psoas major.

Their arrangement is somewhat irregular: one ganglion may give rami to two lumbar nerves, or one lumbar nerve may receive rami from two ganglia.

The first and second, and sometimes the third and fourth lumbar nerves are each connected with the lumbar part of the sympathetic trunk by a white ramus communicans.

The nerves pass obliquely outward behind the Psoas major, or between its fasciculi, distributing filaments to it and the Quadratus lumborum.

The first three and the greater part of the fourth are connected together in this situation by anastomotic loops, and form the lumbar plexus.

The smaller part of the fourth joins with the fifth to form the lumbosacral trunk, which assists in the formation of the sacral plexus.

The fourth nerve is named the nervus furcalis, from the fact that it is subdivided between the two plexuses.

Additional images

The lumbar plexus and its branches.

External links

Anatomy at MUN nerve/lumbnerv
lumbar+nerves at eMedicine Dictionary

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

UpToDate Contents

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English Journal

[11C]PK11195 PET imaging of spinal glial activation after nerve injury in rats.

Imamoto N, Momosaki S, Fujita M, Omachi S, Yamato H, Kimura M, Kanegawa N, Shinohara S, Abe K.SourceDepartment of Innovative Drug Discovery Technologies, Innovative Drug Discovery Research Laboratories, Shionogi & Co, Ltd, Osaka, Japan. natsumi.imamoto@shionogi.co.jp
NeuroImage.Neuroimage.2013 Oct 1;79:121-8. doi: 10.1016/j.neuroimage.2013.04.039. Epub 2013 Apr 21.
The role of glial activation has been implicated in the development and persistence of neuropathic pain after nerve injury by recent studies. PK11195 binding to the translocator protein 18kDa (TSPO) has been shown to be enhanced in activated microglia. This study was designed to assess PK11195 imagi
PMID 23611861

Translational examination of changes in baroreflex function after renal denervation in hypertensive rats and humans.

Hart EC, McBryde FD, Burchell AE, Ratcliffe LE, Stewart LQ, Baumbach A, Nightingale A, Paton JF.SourceSchool of Physiology and Pharmacology, Bristol Heart Institute, Medical Science Bldg, University of Bristol, Bristol, United Kingdom. Julian.F.R.Paton@Bristol.ac.uk.
Hypertension.Hypertension.2013 Sep;62(3):533-41. doi: 10.1161/HYPERTENSIONAHA.113.01261. Epub 2013 Jul 1.
Renal denervation has shown promise in the treatment of resistant hypertension, although the mechanisms underlying the blood pressure (BP) reduction remain unclear. In a translational study of spontaneously hypertensive rats (n=7, surgical denervation) and resistant hypertensive human patients (n=8;
PMID 23817496

Venous sinus stenting for idiopathic intracranial hypertension: a review of the literature.

Puffer RC, Mustafa W, Lanzino G.SourceMayo Medical School, Mayo Clinic, Rochester, Minnesota, USA.
Journal of neurointerventional surgery.J Neurointerv Surg.2013 Sep 1;5(5):483-6. doi: 10.1136/neurintsurg-2012-010468. Epub 2012 Aug 4.
Idiopathic intracranial hypertension (IIH) is characterized by headache, papilledema, visual field changes and tinnitus with elevated cerebral spinal fluid opening pressures on lumbar puncture. Left untreated, this condition can lead to permanent visual loss. Previous treatment modalities include me
PMID 22863980

Japanese Journal

腰椎椎間孔部における神経根絞扼に対する補助診断としてのThree dimensional fast imaging employing steady state acquisition (3D-FIESTA)法 (日本脊椎インストゥルメンテーション学会特集号)

根本理,橘安津子,松川啓太朗
Journal of spine research : official journal of the Japanese Society for Spine Surgery and Related Research 4(10), 1517-1521, 2013-10
NAID 40019846581

腰部脊柱管狭窄症における画像・電気生理学的診断上第5腰神経重複病変(double lesion)の頻度 (日本脊椎脊髄病学会特集号) -- (第42回日本脊椎脊髄病学会優秀論文集)

岩﨑博,吉田宗人,山田宏 [他]
Journal of spine research : official journal of the Japanese Society for Spine Surgery and Related Research 4(9), 1351-1355, 2013-09
NAID 40019827827

臨床経験腰部脊柱管狭窄症における神経根ブロックの意義

蓑田正也,良川昌鳳,岡本剛治 [他]
臨床整形外科 48(9), 925-928, 2013-09
NAID 40019799606

Related Pictures

★リンクテーブル★

リンク元	「腰神経」
関連記事	「lumbar」「nerve」

「腰神経」

Nerve: Lumbar nerves
	Areas of distribution of the cutaneous branches of the posterior divisions of the spinal nerves. The areas of the medial branches are in black, those of the lateral in red.
	Plan of lumbar plexus.
Latin	nervi lumbales
Gray's	subject #209 924