The arch of the aorta or the transverse aortic arch ( /eɪˈɔrtɪk/) is the part of the aorta that begins at the level of the upper border of the second sternocostal articulation of the right side, and runs at first upward, backward, and to the left in front of the trachea; it is then directed backward on the left side of the trachea and finally passes downward on the left side of the body of the fourth thoracic vertebra, at the lower border of which it becomes continuous with the descending aorta.
It thus forms two curvatures: one with its convexity upward, the other with its convexity forward and to the left. Its upper border is usually about 2.5 cm. below the superior border to the manubrium sterni.
It lies within the mediastinum.
Other articles related to "aortic arch":
... of the mediastinum Passage of the thoracic duct from right to left behind esophagus Aortic Arch Tracheal Bifurcation End of the azygos system into SVC ...
... Interrupted aortic arch is a very rare heart defect (affecting 3 per million live births) in which the aorta is not completely developed ... Interrupted aortic arch is often associated with DiGeorge Syndrome ...
Famous quotes containing the word arch:
“Dark accurate plunger down the successive knell
Of arch on arch, where ogives burst a red
Reverberance of hail upon the dead
Thunder like an exploding crucible!”
—Allen Tate (18991979)