3 doctors weighed in:
Why do blood vessels appear bluish or greenish under the skin?
3 doctors weighed in

Dr. Robert Greer
Family Medicine
2 doctors agree
In brief: Veins are closer
Veins carry blood that has given up oxygen(and headed to the heart and lungs for more oxygen) and that blood is darker than oxygenated blood in the arteries which are deeper and less visible.

In brief: Veins are closer
Veins carry blood that has given up oxygen(and headed to the heart and lungs for more oxygen) and that blood is darker than oxygenated blood in the arteries which are deeper and less visible.
Dr. Robert Greer
Dr. Robert Greer
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