Variations and clinical importance of the superficial palmar arch
Keen supposed that the median artery is a persistence of an embryonic artery  and Jaschtchinski called it an atavistic condition because it is usually found to contribute to the palmar arch
(arcus palmaris) of certain lower animals .
sup] Peripheral artery bypass is a good alternative in the vasoocclusive disease of the superficial palmar arch
and tarsal arch, and also in relieving symptoms in lower limb larger arterial occlusive disease.
The radial indicis artery may arise either from the princeps or from the deep palmar arch
The ulnar branch of the superficial antebrachial artery persists independently, without its usual anastomosis to the branch of the axis atery, as the large lateral branch of the brachial artery and the superficial ulnar atery, which is found in the distal part of the forearm and joins the superficial palmar arch
The original axial artery persists as the anterior interosseous artery in the forearm and the deep palmar arch
in the hand.
The complete superficial palmar arch
was found in 14 (56%) samples and 11 (44%) samples it was incomplete.
The deep palmar arch
is found to be comparatively less variable than superficial palmar arch
Thence it forms deep palmar arch
in the palm after giving off the princeps pollicis and radialis indicis artery.