What are internal thoracic vessels?
What are internal thoracic vessels? The internal thoracic artery (internal mammary artery) is a long, paired vessel that originates from the proximal part of the subclavian artery. Terminating at the level of the sixth rib, it divides into two terminal branches: superior epigastric and musculophrenic arteries. How many internal thoracic arteries are there? The internal thoracic artery runs downward and forward over the dome of the pleura, and passes behind the first costal cartilage. To see where it goes, we'll look at a dissection of the anterior chest wall by itself, seen from behind. Here are the two internal thoracic...