Lateral sacral artery

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Artery: Lateral sacral artery

Internal iliac artery and some branches. Lateral sacral artery labeled at upper right.

The iliac veins. (Lateral sacral labeled at bottom left.)
Latin	arteriae sacrales laterales
Gray's	subject #155 621
Supplies	Erector spinae, Piriformis muscle, Sacral canal
Source	Internal iliac artery
Vein	Lateral sacral veins
Dorlands/Elsevier	a_61/12155741

The lateral sacral arteries arise from the posterior division of the internal iliac artery; there are usually two, a superior and an inferior.

1 Superior
2 Inferior
3 See also
4 Additional images
5 External links

The superior, of large size, passes medialward, and, after anastomosing with branches from the middle sacral, enters the first or second anterior sacral foramen, supplies branches to the contents of the sacral canal, and, escaping by the corresponding posterior sacral foramen, is distributed to the skin and muscles on the dorsum of the sacrum, anastomosing with the superior gluteal.

The inferior runs obliquely across the front of the piriformis and the sacral nerves to the medial side of the anterior sacral foramina, descends on the front of the sacrum, and anastomoses over the coccyx with the middle sacral and opposite lateral sacral artery.

In its course it gives off branches, which enter the anterior sacral foramina; these, after supplying the contents of the sacral canal, escapes by the posterior sacral foramina, and are distributed to the muscles and skin on the dorsal surface of the sacrum, anastomosing with the gluteal arteries.

Median sacral artery

Iliopelvic glands (lateral view).

SUNY Labs 43:13-0104 - "The Female Pelvis: Branches of Internal Iliac Artery"
lateral+sacral+arteries at eMedicine Dictionary

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v • d • e

List of arteries of torso - abdomen

AA:
Anterior

celiac	left gastric: esophageal branches splenic: pancreatic branches (greater, dorsal) – short gastric – left gastro-omental common hepatic: proper hepatic (cystic), right gastric, gastroduodenal (right gastro-omental, superior pancreaticoduodenal, supraduodenal)
SMA	inferior pancreaticoduodenal – intestinal (jejunal, ileal, arcades, vasa recta) – ileocolic (colic, anterior cecal, posterior cecal, ileal branch, appendicular) – right colic – middle colic
IMA	left colic – sigmoid – superior rectal – marginal