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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.
In the first intercostal space, it gives off a branch which is distributed in a manner similar to the distribution of the aortic intercostals. The branch for the second intercostal space usually joins with one from the highest aortic intercostal artery.
The superior thoracic artery (highest thoracic artery) is a small artery [1] located near the armpit. [2] It usually originates from (the first division of) the axillary artery , but can instead originate from the thoracoacromial artery (itself a branch of the second division of the axillary artery).
The supreme intercostal vein (highest intercostal vein) is a paired vein that drains the first intercostal space on its corresponding side. It usually drains into the brachiocephalic vein . [ 1 ] Alternatively, it drains into the superior intercostal vein , or the vertebral vein of its corresponding side.
The arteries of the upper extremity The subclavian artery; The axilla. The axillary artery; The brachial artery; The radial artery; The ulnar artery; The arteries of the trunk The descending aorta. The thoracic aorta; The abdominal aorta; The common iliac arteries The hypogastric artery; The external iliac artery; The arteries of the lower ...
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Today's NYT Connections puzzle for Thursday, February 13, 2025The New York Times
Twelve anterior intercostal branches, two to each of the top six intercostal spaces. In a given space, the upper branch travels laterally along the bottom of the rib until it anastomoses with its corresponding posterior intercostal artery. The lower branch of the space anastomoses with a collateral branch of the posterior intercostal artery.