Question

if a vessel is blocked or diseased is it

Answer 1

The system of flexible tubes -- some big, some very tiny -- move fluids throughout your body. If they were stretched end-to-end, there would be enough to circle the Earth multiple times

This whole network of vessels is known as your vascular or circulatory system. "Vascular" comes from a Latin word for hollow container. Any condition that affects this system is considered vascular disease. The diseases range from problems with your arteries, veins, and vessels that carry lymph to disorders that affect how blood flows. A disease can lead to your tissues not getting enough blood, a condition called ischemia, as well as other serious, even life-threatening, problems.