How it works
This is the right arm from the front, held out to the side with the palm forward, so the thumb side is at the top. Dashed lines are the deep veins of the forearm and upper arm; the other veins are drawn solid.
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Follow the blood from the fingers
Blood leaves the fingers in the digital veins and gathers in the palm. From there it runs up the forearm in the deep radial and ulnar veins and the veins near the skin, crosses at the elbow, and climbs the arm in the cephalic, basilic and brachial veins. They meet in the armpit and carry on under the collarbone to the neck and chest.
- Cephalic is on the thumb side and basilic on the little-finger side; the median cubital vein joins them across the elbow.
Questions and answers
What are the main veins of the arm?
Near the skin: the cephalic vein on the thumb side, the basilic vein on the little-finger side, and the median cubital vein joining them at the elbow. Deep: the radial and ulnar veins in the forearm and the brachial vein in the upper arm.
Which vein is used to draw blood?
Most often the median cubital vein, in the bend of the elbow. It lies near the skin and links the cephalic and basilic veins.
Where do the arm veins drain?
Into the axillary vein in the armpit, which becomes the subclavian vein under the collarbone. That joins the internal jugular to form the brachiocephalic vein, which leads to the superior vena cava and the heart.