Subcostal arteries

The subcostal arteries, so named because they lie below the last ribs, constitute the lowest pair of branches derived from the thoracic aorta, and are in series with the intercostal arteries.

Subcostal arteries
Details
Sourcethoracic aorta
Veinsubcostal vein
Identifiers
Latinarteria subcostalis
TA98A12.2.11.020
TA24202
FMA4613
Anatomical terminology

Each passes along the lower border of the twelfth rib behind the kidney and in front of the Quadratus lumborum muscle, and is accompanied by the twelfth thoracic nerve.

It then pierces the posterior aponeurosis of the Transversus abdominis, and, passing forward between this muscle and the Internal Oblique, anastomoses with the superior epigastric, lower intercostal, and lumbar arteries.

Each subcostal artery gives off a posterior branch which has a similar distribution to the posterior ramus of an intercostal artery.

ReferencesEdit

This article incorporates text in the public domain from page 601 of the 20th edition of Gray's Anatomy (1918)

External linksEdit