Princeps pollicis artery

Artery: Princeps pollicis artery
Palm of left hand, showing position of skin creases and bones, and surface markings for the volar arches.
Latin	arteria princeps pollicis
Gray's	subject #151 595
Supplies	thumb
Source	radial artery
Dorlands / Elsevier	a_61/12155558

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

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The princeps pollicis (principal artery of the thumb) arises from the radial artery just as it turns medially towards the deep part of the hand; it descends between the first dorsal interosseous muscle and the oblique head of the adductor pollicis, along the medial side of the first metacarpal bone to the base of the proximal phalanx, where it lies beneath the tendon of the flexor pollicis longus muscle and divides into two branches.

These make their appearance between the medial and lateral insertions of the adductor pollicis, and run along the sides of the thumb, forming an arch on the palmar surface of the distal phalanx, from which branches are distributed to the integument and subcutaneous tissue of the thumb.

Additional images

• 

  The radial and ulnar arteries. (Arteria princeps pollicis visible at lower left.)

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  Ulnar and radial arteries. Deep view.

External links

• Atlas of anatomy at UMich hand_blood2 ("Palm of the hand, deep dissection, anterior view")
• Atlas of anatomy at UMich hand_blood3 ("Dorsum of the hand, deep dissection, posterior view")
• Princeps+pollicis+artery at eMedicine Dictionary

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 As such, some of the information contained herein may be outdated.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.