Median cubital vein

Vena mediana cubiti

CardiovascularBlood vesselsArmLeft and right

View left in 3D View right in 3D

What it is
A short oblique superficial vein crossing the front of the elbow (cubital fossa) from the cephalic vein upward and medially to the basilic vein, lying on the bicipital aponeurosis that shields the brachial artery beneath.
Function
Links the two main superficial veins of the upper limb.
Size
~3–4 mm diameter; ~2.5 cm long.
Clinical note
The most common site for drawing blood (venepuncture) because it is large, fixed and superficial.

Nearby cardiovascular structures Basilic vein, Brachial artery, Cephalic vein, Radial artery, Superficial palmar arch and digital arteries, Ulnar artery