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Superficial palmar venous arch

The superficial palmar venous arch is located in the hand, and assists in draining oxygen-depleted blood from the hand and the common palmar digital veins within the fingers. From there, blood drains through the arch and up the ulnar vein. Once there, the blood flows up the arm until it joins into the brachial vein, which then leads into the axillary vein. Ultimately, the oxygen-depleted blood must return to the lungs. There, new oxygen will enter the blood stream.  Next, it flows to the heart via the lungs, where it will be pumped back into the aorta and back into the body. The superficial palmar venous arch is designated as a venae comitantes. That is, it runs a similar course as nearby arteries. This includes the artery known as the superficial palmar arch. Also, the common palmar digital veins are venae comitantes to the common palmar digital arteries of the fingers. The arterial arch and digital arteries convey oxygenated blood to the anatomical regions they serve.

Written and medically reviewed by the Healthline Editorial Team
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In Depth: Superficial palmar venous arch

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