Which vein runs on the midline of the lower arm?

• A. Cephalic vein
• B. Basilic vein
• C. Median antebrachial vein
• D. Median cubital vein

Answer: (C)

The midline vein of the forearm is the median antebrachial vein. This vessel typically runs along the center of the forearm, on the front (ventral) surface, and ascends toward the elbow. Its presence is variable—some people have a distinct median antebrachial vein, while others may lack a prominent midline vein altogether. When present, it often drains into the basilic vein or connects with other superficial veins around the elbow region.

In contrast, the cephalic vein travels along the lateral (thumb-side) aspect of the forearm and arm, the basilic vein runs along the medial (pinky-side) aspect, and the median cubital vein lies in the elbow region, linking the cephalic and basilic veins.