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Right Brachiocephalic

The right brachiocephalic vein is the shorter and smaller, being about 3 3/4 centimeters (1 1/2 inches) in length; it commences behind the medial end of the clavicle and descends vertically to unite with the left brachiocephalic vein behind the junction of the first right costal cartilage with the sternum, to form the superior vena cava. To the lateral side, there are the pleura and lungs, and the right phrenic nerve; to its medial side, and on a plane posterior to it, there are the right subclavian and the brachiocephalic arteries, the right vagus nerve, and the trachea. In front of it there are the remains of the thymus gland, the origin of the sternothyroid and the sternohyoid muscles, the sternal end of the clavicle, and the first costal cartilages. Behind it, the pleura and lungs are in a groove of which it lies, so that these structures are slightly posterior as well as lateral and anterior, and overlap its termination.