Quick Facts
Origin: Palmar metacarpal veins.
Course: Along the distal bases of the second to fifth metacarpals.
Tributaries: Palmar digital and palmar metacarpal veins.
Drainage: Palmar aspect of the hand.
Origin
The deep palmar arch arises from the palmar metacarpal veins.
Course
The deep palmar arch drains primarily into the radial veins on lateral aspects of the forearm, but also drains into the ulnar veins on the medial aspect of the distal forearm.
Tributaries
The deep palmar arch receives the palmar digital veins of the thumb, palmar metacarpal veins, and the connecting veins from the superficial arch.
Structures Drained
The deep palmar arch aids in the venous drainage of the palmar aspect of the hand.
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Vein
A venous sinus is a vein with a thin wall of endothelium that is devoid of smooth muscle to regulate its diameter.
