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Subcostal arteries

FieldValue
NameSubcostal arteries
Latinarteria subcostalis
BranchFromThoracic aorta
VeinSubcostal vein

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.

Anatomy

Course and relations

Each intercostal artery is accompanied by the corresponding (i.e. ipsilateral) subcostal vein and nerve.**** Each passes along the lower border of the 12th rib.****

Before entering the anterior abdominal wall, each runs laterally upon the anterior surface of the lumbar fascia (and thus also anterior to the underlying quadratus lumborum muscle which the lumbar fascia envelops) posterior to the ipsilateral kidney.**** It then pierces the posterior aponeurosis of the transversus abdominis, thus entering the anterior abdominal wall to course in between the abdominal internal oblique muscle and transverse abdominal muscle (the neurovascular plane of the anterior abdominal wall).****

Branches

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

Anastomoses

It anastomoses with the superior epigastric, lower intercostal, and lumbar arteries.****

References

References

  1. Sinnatamby, Chummy. (2011). "Last's Anatomy".
  2. Gray, Henry. (1918). "Gray's Anatomy".
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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