Veins have thinner partitions than arteries mainly because they work less than lower pressure. In addition they comprise valves that protect against backflow, making sure that blood returns effectively to the center. Like arteries, veins encompass three levels but with significantly less muscle mass and elastic tissue. Microcirculation is critical https://www.sgvascularctr.com/a-complete-guide-to-aortic-aneurysm-in-singapore/