Have you ever looked at the backs of your hands and wondered why bright blue veins seem to stand out so clearly, especially in certain lighting or when your skin is stretched? Those prominent blue veins are not random lines under your skin — they are part of the superficial venous system that lies just beneath the surface and plays a role in returning blood to the heart. The color you see through your skin isn’t the actual blood color but rather how… CONTINUE READING…
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