At the level of the first rib, the lower cervical nerve roots combine to form the 3 trunks of the brachial plexus. The lowest trunk is formed by the union of C8 and T1, and this trunk lies ...

The human neck is a complex structure that contains the extension of a number of vital visceral structures, including the trachea, esophagus, and the carotid and vertebral arteries, and a ...