. On the anatomy of vertebrates [electronic resource] . na saphena, and, withthe deeper-seated ones, mainly uniteinto trunks which again subdivideto enter the 6 inguinal glands, , i, 2. Their efferent trunksaffect the course of the iliac vessels,converging toward and uniting bycross branches with those of theopposite side, and communicatingwith the lacteal system, at the ( re-ceptaculum chyli, n, whence pro-ceed the origins of the thoracic , in Man and most Mammals,enters the thorax between the aortaand vena azygos, and lies behind theoesophagus in the posterior mediastinum. It


. On the anatomy of vertebrates [electronic resource] . na saphena, and, withthe deeper-seated ones, mainly uniteinto trunks which again subdivideto enter the 6 inguinal glands, , i, 2. Their efferent trunksaffect the course of the iliac vessels,converging toward and uniting bycross branches with those of theopposite side, and communicatingwith the lacteal system, at the ( re-ceptaculum chyli, n, whence pro-ceed the origins of the thoracic , in Man and most Mammals,enters the thorax between the aortaand vena azygos, and lies behind theoesophagus in the posterior mediastinum. It is frequently tor-tuous and rarely single throughout. It often splits into twoor more branches, which after a longer or shorter course reunite;this division and reunion may be two or three times principal canal, in Man, fig. 400, a, a, mounts into thecervical region in front of the vertebral artery and vein to thelevel of the seventh cervical vertebra, opposite to which it be-gins to form a curve, first forward and outward, then downward. Superficial lymphatics of the lower extre-mity. CLXXI. 510 ANATOMY OF VERTEBRATES. and inward, over the subclavian artery to reach the angle of unionbetween the left subclavian, s, and internal jugular, j, veins, atwhich point it empties itself into the venous system by one ormore branches. The corresponding veins on the right side also 399


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