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The intercostal arteries are a group of arteries passing within an intercostal space (the space between two adjacent ribs). There are 9 anterior and 11 posterior intercostal arteries on each side of the body. The anterior intercostal arteries are branches of the internal thoracic artery and its terminal branch – the musculophrenic artery.
The internal thoracic artery (ITA), also known as the internal mammary artery, is an artery that supplies the anterior chest wall and the breasts. [1] It is a paired artery, with one running along each side of the sternum , to continue after its bifurcation as the superior epigastric and musculophrenic arteries .
Retrieved from "https://en.wikipedia.org/w/index.php?title=Posterior_intercostal_artery&oldid=629739652"https://en.wikipedia.org/w/index.php?title=Posterior_intercostal
Segmental medullary arteries are arteries of varying size in the thoracolumbar region that arise from segmental arteries of this region (posterior intercostal arteries or lumbar arteries) and pass through intervertebral foramina to supply the spinal cord. [1] They may join the anterior spinal artery. [2]
Passing backward, it splits into the deep cervical artery and the supreme intercostal artery (highest intercostal artery), which descends behind the pleura in front of the necks of the first and second ribs, and anastomoses with the first aortic intercostal (3rd posterior intercostal artery).
The two coronary arteries of the heart arise from the aortic root, just above the cusps of the aortic valve. The aorta then arches back over the right pulmonary artery . Three vessels come out of the aortic arch : the brachiocephalic artery , the left common carotid artery , and the left subclavian artery .
These posterior intercostal arteries dilate to accommodate the high pressure, and when the heart beats, they pulsate and literally rub up against the ribs, slowly wearing away bone. This can be seen on x-ray as “rib notching”, typically only affecting ribs 3-9 and but particularly affecting ribs 3 and 4.
Intercostal vessels may refer to: Intercostal arteries. Posterior intercostal arteries; Highest intercostal artery; Anterior intercostal branches of internal thoracic artery; Intercostal veins. Supreme intercostal vein; Superior intercostal vein; Posterior intercostal veins
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