Superficial palmar arch

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Artery: Superficial palmar arch
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Palm of left hand, showing position of skin creases and bones, and surface markings for the volar arches.
Latin arcus palmaris superficialis, arcus volaris superficialis
Gray's subject #152 598
Source ulnar (primarily), superficial palmar branch of the radial artery   
Branches common palmar digital
Vein superficial palmar venous arch
/ Elsevier

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

The superficial palmar arch (superficial volar arch) is formed predominantly by the ulnar artery, with a contribution from the superficial palmar branch of the radial artery.

The arch passes across the palm in a curve with its convexity downward.

If one were to fully extend the thumb, the superficial palmar arch would lie approximately at the level of a line drawn from the distal border of the thumb across the palm. The superficial palmar arch is more distal than the deep palmar arch.

Three common palmar digital arteries (also called ulnar metacarpal arteries) arise from the arch, proceeding down on the second, third, and fourth lumbrical muscles, respectively. They each receive a contribution from a palmar metacarpal artery. Near the level of the metacarpophalangeal joints, each common palmar digital artery divides into two proper palmar digital arteries.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.