The axillary vein lies on the medial or concave side of its artery, but it overlaps and conceals the artery when the arm is abducted. it begins at the lower border of the teres major as the continuation of the basilic vein and ends at the lower border of the first rib as the subclavian vein.
Source: Boileau grant jc. A method of anatomy: descriptive and deductive. 5th ed. baltimore, md: williams & wilkins co; 1952:88.
August 2003. Arch Surg. 2003;138(8):928. doi:10.1001/archsurg.138.8.928