The axillary artery is renamed the artery after it passes the inferior border of the teres major muscle.

The axillary artery is renamed the brachial artery after it passes the inferior border of the teres major muscle. This is an important transition as the axillary artery supplies the upper limb and transitions to the brachial artery, which continues down the arm. The brachial artery further bifurcates into the radial and ulnar arteries at the level of the elbow, continuing to provide blood supply to the forearm and hand. Understanding this anatomical change is crucial for medical students and healthcare professionals when studying the vascular system of the upper limb, including locations for arterial blood draws or identifying arterial supply during surgical procedures.