Swollen bluish veins resulting from the valves that do not close properly are called ______.
A.Superficial Veins
B.Deep Veins
C.Systemic Veins
D.Varicose Veins✓ Correct
Explanation
Varicose veins are enlarged, twisted veins that appear bluish and swollen under the skin, caused by faulty valves that fail to close properly, allowing blood to pool and veins to bulge.
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