(解剖)下腸間膜動脈

同: IMA

WordNet

of or characteristic of low rank or importance
one of lesser rank or station or quality
having an orbit between the sun and the Earths orbit; "Mercury and Venus are inferior planets"
lower than a given reference point; "inferior alveolar artery"
of low or inferior quality
a major thoroughfare that bears important traffic
a blood vessel that carries blood from the heart to the body (同)arteria, arterial blood vessel
of or relating to or located in a mesentery

PrepTutorEJDIC

(階級・親分・質・程度などが)『下の』,『劣る』, / (位置が)低い,下方の / 目下の者;劣った人
動脈 / (道路・水路・鉄道などの)勘線,(通信の)主チャンネル

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/09/16 14:07:53」(JST)

wiki en

[Wiki en表示]

In human anatomy, the inferior mesenteric artery, often abbreviated as IMA, is the third main branch of the abdominal aorta and arises at the level of L3, supplying the large intestine from the left colic (or splenic) flexure to the upper part of the rectum, which includes the descending colon, the sigmoid colon, and part of the rectum. Proximally, its territory of distribution overlaps (forms a watershed) with the middle colic artery, and therefore the superior mesenteric artery. The SMA and IMA anastomose via the marginal artery of the colon (artery of Drummond) and via Riolan's arcade (a connection between the left colic artery and the medial colic artery). The territory of distribution of the IMA is more or less equivalent to the embryonic hindgut.

Branching

The IMA branches off the anterior surface of the abdominal aorta below the renal artery branch points, and approximately midway between these and the aortic bifurcation (into the common iliac arteries), L3 vertebral level.

The IMA has the following branches:

Branch	notes
left colic artery	supplies descending colon
sigmoid branches	the most superior being described as 'the superior sigmoid artery'
superior rectal artery	effectively the terminal branch of the IMA (the continuation of the IMA after all other branches)

All these arterial branches further divide into arcades which then supply the colon at regular intervals.

Associated veins

The IMA is accompanied along its course by a similarly named vein, the inferior mesenteric vein, which drains into the splenic vein.

The IMV therefore drains to the portal vein and does not fully mirror the course of the IMA.

Surgery and pathology

The IMA and/or its branches must be resected for a left hemicolectomy.

A horseshoe kidney, a common (1 in 500) anomaly of the kidneys, will be positioned below the IMA.

Additional images

The abdominal aorta and its branches.
The inferior mesenteric artery and its branches.
Abdominal portion of the sympathetic trunk, with the celiac plexus and hypogastric plexus.
Duodenojejunal fossa.
Posterior abdominal wall, after removal of the peritoneum, showing kidneys, suprarenal capsules, and great vessels.
Front of abdomen, showing surface markings for arteries and inguinal canal.
Inferior mesenteric artery
Lumbar and sacral plexus. Deep dissection.Anterior view.
Lumbar and sacral plexus. Deep dissection.Anterior view.
Lumbar and sacral plexus. Deep dissection.Anterior view.

External links

Anatomy figure: 39:02-05 at Human Anatomy Online, SUNY Downstate Medical Center - "Branches of the inferior mesenteric artery."
Anatomy photo:40:11-0103 at the SUNY Downstate Medical Center - "Posterior Abdominal Wall: Branches of the Abdominal Aorta"
SUNY Anatomy Image 7924
SUNY Anatomy Image 7997
SUNY Anatomy Image 8407
SUNY Anatomy Image 8659
Atlas image: abdo_wall70 at the University of Michigan Health System - "Posterior Abdominal Wall, Dissection, Anterior View"
sup&infmesentericart at The Anatomy Lesson by Wesley Norman (Georgetown University)

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.

1. 急性腸間膜虚血 acute mesenteric ischemia
2. 慢性腸間膜虚血 chronic mesenteric ischemia
3. 上腸間膜動脈症候群 superior mesenteric artery syndrome
4. 成人における非静脈瘤性消化管出血の血管造影による管理 angiographic control of nonvariceal gastrointestinal bleeding in adults
5. 非閉塞性腸間膜虚血 nonocclusive mesenteric ischemia

English Journal

Disease Beyond the Arch: A Systematic Review of Middle Aortic Syndrome in Childhood.

Rumman RK1, Nickel C2, Matsuda-Abedini M3, Lorenzo AJ4, Langlois V3, Radhakrishnan S3, Amaral J5, Mertens L6, Parekh RS7.
American journal of hypertension.Am J Hypertens.2015 Jul;28(7):833-46. doi: 10.1093/ajh/hpu296. Epub 2015 Jan 27.
BACKGROUND: Middle aortic syndrome (MAS) is a rare clinical entity in childhood, characterized by a severe narrowing of the distal thoracic and/or abdominal aorta, and associated with significant morbidity and mortality. MAS remains a relatively poorly defined disease. This paper systematically revi
PMID 25631383

Spontaneous coronary artery thrombosis in the setting of active lupus mesenteric vasculitis.

Reddy YN1, Sundaram V2, Tam M2, Parikh SA2.
Lupus.Lupus.2015 Jul;24(8):885-8. doi: 10.1177/0961203315570167. Epub 2015 Feb 10.
A 33-year-old male with systemic lupus erythematosus (SLE) presented with acute abdominal pain and was found to have lupus mesenteric vasculitis on imaging and during exploratory laparotomy. Post laparotomy he continued to have persistent nausea and dyspepsia and an electrocardiogram showed evidence
PMID 25672373

Lymphadenectomy should be performed up to the renal vein in patients with intermediate-high risk endometrial cancer.

Alay I1, Turan T, Ureyen I, Karalok A, Tasci T, Ozfuttu A, Kose MF, Tulunay G.
Pathology oncology research : POR.Pathol Oncol Res.2015 Jul;21(3):803-10. doi: 10.1007/s12253-014-9893-4. Epub 2015 Jan 7.
We aimed to evaluate para-aortic metastases relative to the level of inferior mesenteric artery (IMA) and to discuss the clinico-pathological features of these patients. A total of 204 patients who underwent systematic pelvic and para-aortic lymphadenectomy up to the level of renal veins for endomet
PMID 25564000

Japanese Journal

CASE REPORT : Total bowel ischemia after carbon dioxide angiography in a patient with inferior mesenteric artery occlusion

Mizuno Atsushi,Nishi Yutaro,Niwa Koichiro
Cardiovascular intervention and therapeutics 29(3), 243-246, 2014-07
NAID 40020134748

症例術前三次元CTが有用であった下腸間膜動脈切除後の横行結腸癌の1例

戸塚統,小川博臣,吉成大介 [他]
外科 = Surgey : 臨床雑誌 76(3), 322-325, 2014-03
NAID 40019989838

Origin of the Celiac and Superior Mesenteric Arteries in a Common Trunk - Description of a Rare Vessel Variation of the Celiacomesenteric Trunk with a Literature Review

YAN Jun,NAGASAWA Yoshie,NAKANO Masato,HITOMI Jiro
Okajimas Folia Anatomica Japonica 91(2), 45-48, 2014
… A variation artery was observed in a Japanese cadaver. … The celiac and superior mesenteric arteries arose from a common trunk (also referred to as the celiacomesenteric trunk), but not from the abdominal aorta, respectively. … From the common trunk, the common hepatic artery was distributed in the right part of the liver, and the left hepatic artery arose from the left gastric artery, which also arose from the common trunk. …
NAID 130004705808

Related Pictures

★リンクテーブル★

リンク元	「下腸間膜動脈」「IMA」
関連記事	「inferior」「inferio」「mesenteric」

「下腸間膜動脈」

Artery: Inferior mesenteric artery
	Sigmoid colon and rectum, showing distribution of branches of inferior mesenteric artery and their anastomoses. (Inferior mesenteric artery labeled at center.)
	Abdominal part of digestive tube and its attachment to the primitive or common mesentery. Human embryo of six weeks. (Inferior mesenteric artery labeled at bottom right.)
Latin	arteria mesenterica inferior
Gray's	p.609
Source	abdominal aorta
Branches	left colic artery, sigmoid branches, superior rectal artery
Vein	inferior mesenteric vein
Precursor	vitelline arteries
MeSH	Mesenteric+Artery,+Inferior

　　[★]

英: inferior mesenteric artery (Z), IMA
ラ: arteria mesenterica inferior
関: 上腸間膜動脈

L3

起始

腹大動脈

走行

分布

枝

腹腔動脈	foregut	前腸に由来する臓器(食道下部、胃、十二指腸、肝臓、胆嚢、膵臓)、脾臓 stomach to proximal duodenum; liver, gallbladder, pancreas
上腸間膜動脈	midgut	distal duodenum to proximal 2/3 of transverse colon
下腸間膜動脈	hindgut	distal 1/3 of transverse colon to upper portion of rectum