Subcostal arteries 5005843 154091472 2007-08-28T03:09:31Z Arcadian 104523 Subcostal vein {{Infobox Artery | Name = {{PAGENAME}} | Latin = arteria subcostalis | GraySubject = 153 | GrayPage = 601 | Image = | Caption = | Image2 = | Caption2 = | BranchFrom = [[thoracic aorta]] | BranchTo = | Vein = [[subcostal vein]] | Supplies = | MeshName = | MeshNumber = | DorlandsPre = a_61 | DorlandsSuf = 12156049 | }} 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]]. 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 [[Obliquus internus]], [[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. ==External links== * {{GPnotebook|1939472444}} * {{SUNYAnatomyFigs|21|06|06}} - "Branches of the [[ascending aorta]], [[arch of the aorta]], and the [[descending aorta]]." * {{eMedicineDictionary|subcostal+artery}} {{Gray's}} {{circulatory-stub}} {{Arteries of chest}}