arteria spinalis anterior

前脊髄動脈

WordNet

1. of or near the head end or toward the front plane of a body
2. earlier in time (同)prior
3. of or relating to the spine or spinal cord; "spinal cord"; "spinal injury"

PrepTutorEJDIC

1. (場所などが)前の,前部の;(…より)前に位置する《+『to』+『名』》 / (時・事件などが)以前の,先の;(…より)前の《+『to』+『名』》
2. 背骨の / せき髄麻酔

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/08/12 12:53:32」(JST)

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Anterior spinal artery
Micrograph showing an axial section of the anterior spinal cord and anterior spinal artery (top-middle of image). LFB-HE stain.
1: Posterior spinal vein 2: Anterior spinal vein 3: Posterolateral spinal vein 4: Radicular (or segmental medullary) vein 5: Posterior spinal arteries 6: Anterior spinal artery 7: Radicular (or segmental medullary) artery
Details
Source	Vertebral arteries
Vein	Anterior spinal veins
Identifiers
Latin	Arteria spinalis anterior
Dorlands /Elsevier	a_61/12156004
TA	A12.2.08.016
FMA	50531
Anatomical terminology

In human anatomy, the anterior spinal artery is the artery that supplies the anterior portion of the spinal cord. It arises from branches of the vertebral arteries and courses along the anterior aspect of the spinal cord. It is reinforced by several contributory arteries, especially the artery of Adamkiewicz.

Path

The anterior spinal artery arises bilaterally as two small branches near the termination of the vertebral arteries. One of these vessels is usually larger than the other, but occasionally they are about equal in size. Descending in front of the medulla oblongata, they unite at the level of the foramen magnum. The single trunk descends in the front of the medulla spinalis, extending to the lowest part of the medulla spinalis. It is continued as a slender twig on the filum terminale.

On its course the artery takes several small branches (i.e. anterior segmental medullary arteries), which enter the vertebral canal through the intervertebral foramina. These branches are derived from the vertebral artery, the ascending cervical artery, a branch of the inferior thyroid artery in the neck, the intercostal arteries in the thorax, and from the lumbar artery, iliolumbar artery and lateral sacral arteries in the abdomen and pelvis.

The vessel is placed in the pia mater along the anterior median fissure. It supplies that membrane, and the substance of the medulla spinalis, also sending off branches at its lower part to be distributed to the cauda equina.

Disorders

Disruption of the anterior spinal artery leads to bilateral disruption of the corticospinal tract, causing motor deficits, and bilateral disruption of the spinothalamic tract, causing sensory deficits in the form of pain/temperature sense loss. It is called anterior spinal artery syndrome. This occurs when the disruption of the anterior spinal artery is at the level of the spinal cord. Contrast this with medial medullary syndrome, when the anterior spinal artery is occluded at the level of the medulla oblongata.

Additional images

• The arteries of the base of the brain.

• Arteries of the brain, brain stem and upper spinal cord.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• Spinal Arterial Anatomy at Neuroangio.org
• Yoshioka K, Niinuma H, Ohira A, Nasu K, Kawakami T, Sasaki M, Kawazoe K. MR angiography and CT angiography of the artery of Adamkiewicz: noninvasive preoperative assessment of thoracoabdominal aortic aneurysm. Radiographics. 2003 Sep-Oct;23(5):1215-25. PMID 12975511 Full Text
• Drawing of the anterior spinal artery
• Horizontal view of blood supply to the spinal cord

UpToDate Contents

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English Journal

• Papillitis and vasculitis of the arteria spinalis anterior as complications of hepatitis C reinfection after liver transplantation.

• Propst T1, Propst A, Nachbauer K, Graziadei I, Willeit H, Margreiter R, Vogel W.
• Transplant international : official journal of the European Society for Organ Transplantation.Transpl Int.1997;10(3):234-7.
• PMID 9163866

• Feeder arteries, longitudinal arterial trunks and arterial anastomoses of the lower human spinal cord.

• Schalow G1.
• Zentralblatt fur Neurochirurgie.Zentralbl Neurochir.1990;51(4):181-4.
• PMID 2099053

• [Value of myelo-angiography in late cases of spinal cord injury].

• Zheng WJ.
• Zhonghua wai ke za zhi [Chinese journal of surgery].Zhonghua Wai Ke Za Zhi.1989 Nov;27(11):684-5, 702.
• 42 cases of spine injury complicated with cord damage were investigated pre-operatively through myelo-angiography to look into the patterns of circulatory changes with relation to treatment and prognosis. The lag period between trauma and this examination varied from 2 months to three years. Myelo-a
• PMID 2632202

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★リンクテーブル★

リンク元	「前脊髄動脈」
関連記事	「spinal」「anterior」

「前脊髄動脈」

　　[★]

英

anterior spinal artery (N)

ラ

arteria spinalis anterior

• 脊髄の腹側表面の前正中裂内を走行する
• 大前根動脈(大根髄動脈、アダムキービッツ動脈)、前根髄動脈(前根動脈？)、椎骨動脈　→　前脊髄動脈

臨床関連

• 前脊髄動脈症候群

「spinal」

　　[★]

• adj.

• 脊髄の、脊髄性の、脊柱の

関

dorsal spine、rachis、spinal column、spinal cord、spine、vertebral column

　 　

「anterior」

　　[★]

• adj.

• 前側の、前の

関

anterioris、anteriorly、before、fore、former、pre、prior