What vein is formed by the confluence of the axillary and cephalic veins?

The subclavian vein is formed by the convergence of the axillary and cephalic veins. As blood returns from the arm, the axillary vein collects blood from various tributaries associated with the arm and shoulder, while the cephalic vein runs along the lateral aspect of the arm and drains directly into the axillary vein. At the point where these two veins meet, they combine to create the subclavian vein, which then continues to transport blood toward the heart.

This anatomical relationship is crucial to understanding venous drainage in the upper extremities, as the subclavian vein plays a significant role in connecting peripheral venous circulation to the central circulatory system. Understanding this confluence aids in recognizing upper limb vascular anatomy and potential avenues for vascular access or the implications of venous diseases.