What are the two main arteries that supply blood to the arms?

The two main arteries that supply blood to the arms are the radial and ulnar arteries. These arteries branch off from the brachial artery, which is the primary artery in the upper arm. The brachial artery splits into the radial and ulnar arteries at the elbow, with the radial artery running along the thumb side and the ulnar artery running along the little finger side of the forearm. This vascular supply is crucial for delivering oxygen-rich blood to the muscles and tissues of the arm and hand, facilitating proper function and health in these areas.

In contrast, the other options do not directly supply blood to the arms. The brachial artery, although it branches into the radial and ulnar arteries, is not itself one of the main arteries supplying blood specifically to the arm. The femoral artery supplies blood to the legs, the carotid and subclavian arteries are primarily involved in supplying blood to the head and neck, and the aorta and pulmonary arteries serve larger systemic functions for overall circulatory health, rather than being specifically concerned with the arms. Understanding the specific arteries and their roles in limb circulation is essential for anyone studying esthetics or related fields.