WordNet

relating to or situated in or extending toward the middle (同)medial
the value below which 50% of the cases fall (同)median value
relating to or constituting the middle value of an ordered set of values (or the average of the middle two in a set with an even number of values); "the median value of 17, 20, and 36 is 20"; "the median income for the year was $15,000" (同)average
of or relating to sacred rites; "sacral laws"
of or relating to or near the sacrum

PrepTutorEJDIC

中央の,中間の / 中間数の,中央値の / (統計・数学で)中間数,中央値;中点
聖礼の
mediumの複数形

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/02/16 14:07:39」(JST)

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The median sacral artery (or middle sacral artery) is a small vessel that arises posterior to the abdominal aorta and superior to its bifurcation.

It descends in the middle line in front of the fourth and fifth lumbar vertebræ, the sacrum and coccyx, ending in the glomus coccygeum (coccygeal gland).

Minute branches pass from it, to the posterior surface of the rectum.

On the last lumbar vertebra it anastomoses with the lumbar branch of the iliolumbar artery; in front of the sacrum it anastomoses with the lateral sacral arteries, sending offshoots into the anterior sacral foramina.

It is crossed by the left common iliac vein and accompanied by a pair of venæ comitantes; these unite to form a single vessel that opens into the left common iliac vein.

The median sacral artery is morphologically the direct continuation of the abdominal aorta but is vestgial in man, but large in animals with tails such as the crocodile.

Additional images

The iliac veins.
Scheme of the anastomosis of the veins of the rectum.
The relations of the viscera and large vessels of the abdomen.
Median sacral artery
Pelvic contents: male. Superior view. Deep dissection.

References

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

External links

Anatomy photo:40:11-0200 at the SUNY Downstate Medical Center - "Posterior Abdominal Wall: Branches of the Abdominal Aorta"
pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (pelvicarteries)

This cardiovascular system article is a stub. You can help Wikipedia by expanding it.

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English Journal

[Prevention of type II endoleak using postoperative coiling of the abdominal aortic aneurysm sac during stent graft implantation].

Sedivý P1, El Samman K, Bartík K, Mach T, Slais M, Stádler P, Prindisová H.
Rozhledy v chirurgii : měsíčník Československé chirurgické společnosti.Rozhl Chir.2010 Jan;89(1):18-23.
AIM: A prospective randomized study assessing the success rates of type II endoleak (EL) prevention, using postoperative coiling of the abdominal aortic aneurysm (AAA) sac during stent graft (SG) implantation.MATERIAL AND METHODS: From January 2008 to July 2009, 86 patients were operated for AAA usi
PMID 21351399

[Correlation between the prostatic vessels and vertebral venous system of the dog].

Suzuki T1, Kurokawa K, Okabe K, Ito K, Hatori T, Imai K, Yamanaka H.
Nihon Hinyōkika Gakkai zasshi. The japanese journal of urology.Nihon Hinyokika Gakkai Zasshi.1991 Nov;82(11):1742-7.
We examined the correlation between the intrapelvic vessels, especially prostatic vessels, and the vertebral venous system in the male dog by radiography. Aorta abdominalis branches the right and left external iliac arteries at the 6th lumbar vertebra, and is divided into the right and left internal
PMID 1762263

Japanese Journal

イヌ前立腺血管と椎骨静脈系との関係について

鈴木孝憲,黒川公平,岡部和彦,伊藤一人,羽鳥基明,今井強一,山中英寿
日本泌尿器科學會雜誌 82(11), 1742-1747, 1991-11-20
雄雑種犬の骨盤内血管,特に前立腺血管と椎骨静脈系との関係を,レントゲン撮影にて観察した。腹大動脈は第6腰椎の高さで外腸骨動脈を左右に分岐し,第7腰椎の高さで内腸骨動脈を左右に,また正中の位置で正中仙骨動脈を分岐していた。仙腸関節の中央部で内腸骨動脈より分岐した尿生殖動脈は,頭側に後膀胱動脈を,尾側に前立腺動脈を分岐していた。前立腺動脈は前立腺被膜部で分岐し,尿道の中心部に向かうように実質内に入り, …
NAID 110003093366

「正中仙骨動脈」

Median sacral artery
	The abdominal aorta and its branches. (Middle sacral visible at center bottom.)
	The arteries of the pelvis. (Middle sacral labeled at upper right.)
Details
Source	abdominal aorta
Vein	Median sacral vein
Supplies	coccyx, lumbar vertebrae, sacrum
Identifiers
Latin	arteria sacralis mediana
Dorlands; /Elsevier	a_61/12155748
TA	A12.2.12.008
FMA	14757
	Anatomical terminology; [edit on Wikidata]