Lumbar arteries

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Artery: Lumbar arteries
The veins of the right half of the male pelvis. (Lumbar arteries not labeled, but third lumbar vein labeled at center top.)
Latin	arteriae lumbales
Gray's	subject #154 612
Supplies	Quadratus lumborum
Source	abdominal aorta
Vein	Lumbar veins
Dorlands / Elsevier	a_61/12154932

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The lumbar arteries are in series with the intercostals.

They are usually four in number on either side, and arise from the back of the aorta, opposite the bodies of the upper four lumbar vertebræ.

A fifth pair, small in size, is occasionally present: they arise from the middle sacral artery.

They run lateralward and backward on the bodies of the lumbar vertebræ, behind the sympathetic trunk, to the intervals between the adjacent transverse processes, and are then continued into the abdominal wall.

The arteries of the right side pass behind the inferior vena cava, and the upper two on each side run behind the corresponding crus of the diaphragm.

The arteries of both sides pass beneath the tendinous arches which give origin to the Psoas major, and are then continued behind this muscle and the lumbar plexus.

They now cross the Quadratus lumborum, the upper three arteries running behind, the last usually in front of the muscle.

At the lateral border of the Quadratus lumborum they pierce the posterior aponeurosis of the Transversus abdominis and are carried forward between this muscle and the Obliquus internus.

They anastomose with the lower intercostal, the subcostal, the iliolumbar, the deep iliac circumflex, and the inferior epigastric arteries.

Additional images

The relations of the viscera and large vessels of the abdomen.

External links

• lumbar+arteries at eMedicine Dictionary
• SUNY Labs 40:11-0201 - "Branches of the Abdominal Aorta"
• Atlas of anatomy at UMich abdo_wall75 - "The Abdominal Aorta"
• SUNY Figs 40:05-07 - "Parietal and visceral branches of the abdominal aorta."

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 As such, some of the information contained herein may be outdated.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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