intercostal artery


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intercostal artery

Any of the nine pairs of arteries that originate from the dorsal side of the thoracic aorta and run horizontally between the ribs to supply blood to the skin, muscles, and bones of the chest wall. These aortic intercostal arteries run in interspaces 3 to 11. The intercostal arteries of the first two interspaces are branches of the superior intercostal artery (a branch of the costocervical trunk of the subclavian artery). The anterior (sternal) segments of the upper nine intercostal spaces receive their blood supplies from the anterior intercostal arteries, which are branches of the internal mammary artery.
Synonym: posterior intercostal artery See: aorta (Branches of aorta)for illus.
See also: artery
References in periodicals archive ?
It has been reported that the sternoclavicular artery, axillary artery, intercostal artery and coracoid major artery originate from the subclavian artery and that the ordinal branching pattern of these arteries varies among species (Erdogan, 2012; Glenny, 1944, 1945a, 1953a, b).
A spinal artery was identified in three patients, one spinal artery originated from the left bronchial artery, one from the right intercostal artery, and one from the right subclavian artery.