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Superior intercostal artery

The superior intercostal artery (Latin: arteria intercostalis suprema) is a branch of the costocervical trunk that supplies tissue in the upper two intercostal spaces.

The artery passes inferiorly between the pleura and the necks of the first and second ribs. While crossing the neck of the first rib, the artery divides into two posterior intercostal arteries, which supply muscles and other tissue in the first two intercostal spaces.