Posterior intercostal artery

The posterior intercostal arteries (singular intercostal artery posterior , "posterior intercostal artery ") are segmental arteries of the chest wall on both sides . In animal anatomy, they are called the dorsal intercostal arteries . The first posterior intercostal arteries arise from the arteria intercostalis suprema , the rest from the aorta .

The posterior intercostal arteries pull in the direction of the rib necks , with those on the right side covering the respective vertebral body due to the somewhat further left position of the aorta. Then they pull along the lower edge (in animals corresponding to the rear edge) of the respective rib. They supply the muscles and the skin of the corresponding intercostal space . In the direction of the sternum, they anastomose with the anterior intercostal arteries . In addition, the posterior and anterior spinal arteries branch off into the spinal canal from the posterior intercostal arteries .

literature

• Richard L. Drake, Wayne Vogl, Adam WM Mitchell: Gray's Anatomy for Students. Elsevier, Urban & Fischer, Munich et al. 2007, ISBN 978-3-437-41231-8 , p. 133.
• Uwe Gille: Cardiovascular and immune system, Angiologia. In: Franz-Viktor Salomon, Hans Geyer, Uwe Gille (Ed.): Anatomy for veterinary medicine. 2nd, revised and expanded edition. Enke, Stuttgart 2008, ISBN 978-3-8304-1075-1 , pp. 404-463.