Vascular System
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Vascular
Q. What are varicose veins?
a
Veins in the limbs and extremities with normally functioning valves.
b
Evidence of faulty venous valves that cause a back flow of blood in the limbs and extremities.
c
Valves formed by the tunica intima, which prevent a back flow of blood.
d
Porous vessels that form when capillaries merge.
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