Veins have thinner walls than arteries mainly because they function under reduce pressure. In addition they incorporate valves that avert backflow, making certain that blood returns successfully to the guts. Like arteries, veins include a few layers but with a lot less muscle mass and elastic tissue. An aortic aneurysm https://www.sgvascularctr.com/a-complete-guide-to-aortic-aneurysm-in-singapore/