Typically, blood flows from arteries to capillaries and onto ... Spending too much time in the sun can damage skin tissue and veins. The sun’s heat causes veins to dilate to regulate the body ...

Unlike arteries, veins contain valves that make sure that ... when small feeder blood vessels just under the skin get bigger as pressure inside the veins increases. Telangiectasias are similar ...

"We were working for an unknown outcome," she says. But after connecting the arteries and veins of the donor's face with Culp's own, the new face "pinked up" – a sign to the transplant team ...