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Vein matching, also called vascular technology, [1] is a technique of biometric identification through the analysis of the patterns of blood vessels visible from the surface of the skin. [2]
It receives the common palmar digital veins (the veins corresponding to the branches of the superficial arterial arch). [ citation needed ] It drains into the superficial ulnar radial and superficial radial veins, [ 1 ] [ additional citation(s) needed ] and the median antebrachial vein .
(Palmar digital veins not labeled but visible at bottom.) Palm of left hand, showing position of skin creases and bones, and surface markings for the volar arches. (Palmar digital veins not visible, but diagram shows location of corresponding arteries.)
The superficial palmar arch is formed predominantly by the ulnar artery, with a contribution from the superficial palmar branch of the radial artery.However, in some individuals the contribution from the radial artery might be absent, and instead anastomoses with either the princeps pollicis artery, the radialis indicis artery, or the median artery, the former two of which are branches from ...
Superficial veins are important physiologically for cooling of the body. When the body is too hot, the body shunts blood from the deep veins to the superficial veins to facilitate heat transfer to the body's surroundings. Superficial veins are often visible underneath the skin.
Palm of left hand, showing position of skin creases and bones, and surface markings for the volar arches. (Deep palmar venous arch not visible, but diagram shows location of corresponding artery.) Details
If one were to fully extend the thumb and draw a line from the distal border of the thumb across the palm, this would be the level of the superficial palmar arch (Boeckel's line). The deep palmar arch is about a finger width proximal to this. The connection between the deep and superficial palmar arterial arches is an example of anastomosis. [1]
The palmar metacarpal veins (or volar metacarpal veins) drain the metacarpal region of the palm, eventually draining into the deep veins of the arm. References [ edit ]