Veins have thinner partitions than arteries since they run less than reduce strain. In addition they contain valves that protect against backflow, making certain that blood returns effectively to the heart. Like arteries, veins include 3 layers but with considerably less muscle and elastic tissue. See: People may very well https://www.sgvascularctr.com/a-complete-guide-to-aortic-aneurysm-in-singapore/