14/11/2025
This diagram shows the arterial network of the shoulder, focusing on the axillary and brachial arteries. The axillary artery gives off several important branches, including the superior thoracic, thoracoacromial, lateral thoracic, subscapular, and circumflex humeral arteries. These branches supply blood to the shoulder muscles, scapular region, and upper thoracic wall. The subscapular artery divides into the circumflex scapular and thoracodorsal arteries, supporting deep shoulder structures. At the lower border of the teres major muscle, the axillary artery transitions into the brachial artery, which continues down the arm and gives rise to branches like the deep artery of the arm and collateral arteries. This illustration highlights how blood reaches the shoulder joint, humerus, and surrounding soft tissues.