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.

Discover the course, branches, and structures supplied by the subcostal arteries, originating from the thoracic aorta.

2023年11月3日 · The subcostal artery accompanies the subcostal vein and nerve in the subcostal space. The trio enters the abdomen as it passes by the lateral (external) arcuate ligament of the diaphragm, quadratus lumborum and the kidney.

2021年4月2日 · The subcostal arteries are bilateral small arteries that arise from the distal descending thoracic aorta and course beneath the 12 th rib. In part supplying the vertebra and spinal cord, they are considered one of the segmental arteries of the aorta.

2025年1月24日 · The subcostal arteries are a pair of arteries that arise from the thoracic aorta and represent the most inferior branches of this major artery. They are named “subcostal” because they run below the last (twelfth) rib, distinguishing them from the intercostal arteries, which run between the ribs.

Subcostal artery Arteria subcostalis. Definition. References. There is no definition for this structure yet. Suggest a definition Gallery. View the module. Anatomical hierarchy Human anatomy 2 Human body > Integrating ...

The subcostal arteries are the lowest parietal branches of the thoracic aorta. They mainly supply the flat abdominal muscles, such as the external obliques, internal obliques, and transversus abdominis.

2018年8月8日 · The subcostal arteries are the final pair of parietal branches produced by the thoracic aorta. They are located under the last ribs; however, they remain in sequence along with the aortic intercostal arteries.

The largest segmental medullary artery is the great radicular artery (or great segmental medullary of Adamkiewicz), which variably arises from a spinal branch of the lower posterior intercostal arteries (T9-T11), the subcostal artery (T12), or from the upper lumbar arteries (L1 or L2).

2023年11月3日 · The lumbar arteries on both sides all terminate by anastomosing with the ipsilateral subcostal, posterior intercostal, iliolumbar, deep circumflex iliac and inferior epigastric arteries. Each lumbar artery divides into the medial, middle and lateral branch adjacent to the corresponding intervertebral foramen.