Now that we have identified the structures making up the various walls of the axilla, it is time to take a look at its contents. We will first examine the blood vessels, then the nerves and finally, the lymphatics, in that order.
|The axillary artery begins at the lateral border of the first rib as a continuation of the subclavian artery. It changes its name to brachial artery at lower (inferior) border of the teres major muscle. For purposes of description, it is broken up into three parts by its relation to the pectoralis minor muscle. The first part is between the lateral border of the first rib and the medial border of the pectoralis minor, the second part is behind the pectoralis minor and the third part is between the lateral border of the pectoralis minor and the inferior border of the teres major.|
|1 superior thoracic a.
(supreme thoracic a.)
(highest thoracic a.)
|2 thoracoacromial a.
3 lateral thoracic a.
|4 subscapular a.
5 anterior humeral circumflex a.
6 posterior humeral circumflex a.
|The veins that run with their corresponding arteries are frequently
(2 or 3 interconnected veins). This interconnected venous network is
called the vena commitantes.
|Axillary Walls||Brachial Plexus|
|This is copyrighted©1999 by Wesley Norman, PhD|