Superficial vein

Superficial vein
Superficial veins become more prominent when muscles are flexed
Details
Identifiers
Latinvena superficialis
TA98A12.0.00.036
TA23910
FMA76719
Anatomical terminology

A superficial vein is a vein that is close to the surface of the body. This differs from deep veins that are far from the surface.

Superficial veins are not paired with an artery, unlike the deep veins, which typically have an artery with the same name close by.

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 surroundings. Superficial veins can be seen under the skin. Those below the level of the heart tend to bulge out. This can be readily witnessed in the hand: raised above the heart and the blood should drain; lowered below the heart and it will fill. Veins become more visually prominent when lifting heavy weight, especially after a period of proper strength training.

Physiologically, the superficial veins are not as important as the deep veins (as they carry less blood) and are sometimes removed in a procedure called vein stripping, which is used to treat varicose veins.[1]

The United States Department of Health and Human Services makes the following distinction, "Spider veins can usually be seen under the skin, but they do not make the skin bulge out like varicose veins do."[2]

Some named superficial veins

Upper limb

Lower limb

See also

References

  1. ↑ "All About Varicose Veins | What Causes Varicose Veins?". www.advancedvascular.com.au. Retrieved July 30, 2018.
  2. ↑ "Post | Varicose Vein & Spider Vein Treatment | Dallas Vein Institute". dallasveininstitute. July 11, 2019. Retrieved July 12, 2019.
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