Median sacral artery

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Artery: 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.)
Latin	arteria sacralis mediana
Gray's	subject #154 613
Supplies	coccyx, lumbar vertebrae, sacrum
Source	abdominal aorta
Vein	Median sacral vein
Dorlands / Elsevier	a_61/12155748

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The median sacral artery (or middle sacral artery) is a small vessel, which arises from the back of the aorta, a little above its bifurcation.

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

From it, minute branches are said to pass 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, and sends offsets into the anterior sacral foramina.

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

See also

• Lateral sacral artery

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.

External links

• SUNY Labs 40:11-0200 - "Posterior Abdominal Wall: Branches of the Abdominal Aorta"
• Norman/Georgetown pelvis (pelvicarteries)

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e Arteries of torso - abdomen
AA: Anterior	celiac left gastric splenic: pancreatic branches (arteria pancreatica magna) – short gastric – left gastro-omental common hepatic: proper hepatic (cystic), right gastric, gastroduodenal (right gastro-omental, superior pancreaticoduodenal) SMA inferior pancreaticoduodenal – intestinal – ileocolic (appendicular) – right colic – middle colic IMA left colic – sigmoid – superior rectal – marginal
AA: Posterior	visceral: middle suprarenal – renal (inferior suprarenal) – testicular/ovarian parietal: inferior phrenic (superior suprarenal) – lumbar – median sacral terminal: common iliac (IIA, EIA)
IIA: Anterior	umbilical (superior vesical, to ductus deferens) – inferior vesical – middle rectal – uterine (azygos of the vagina) – vaginal – obturator (anterior branch, posterior branch) – internal pudendal (inferior rectal, perineal, artery of the urethral bulb, urethral, deep artery of the penis, dorsal artery of the penis) – inferior gluteal (accompanying of ischiadic nerve, crucial anastomosis)
IIA: Posterior	iliolumbar – lateral sacral – superior gluteal
EIA	inferior epigastric (cremasteric) – deep circumflex iliac

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Acknowledgement and Attribution Regarding Sources of Content

Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .