Which artery is known as the major artery of the arm?

The brachial artery is recognized as the major artery of the arm because it is the primary vessel supplying blood to the upper limb. It originates from the axillary artery as it passes the shoulder and runs down the upper arm, typically bifurcating into the radial and ulnar arteries at the elbow. Understanding the anatomical significance of the brachial artery is crucial for both medical procedures and assessments, such as measuring blood pressure and administering intravenous medications. Its location makes it accessible for these purposes, and knowledge of this artery is fundamental for any combat medic tasked with managing trauma to the arm or performing life-saving interventions.