18 Feb 2016 | 258,249 Views. You may not even associate this with your health, yet it can make a life or death difference. Ignore or defy it, and your risk of death before your 65th birthday jumps 25 percent. Here's the big takeaway message to tell your body for health and longevity.
1 Veins have valves which maintain the unidirectional flow of blood, even against gravity. 2  Since the venous pressure is low (7 mm Hg) the valves are of utmost value in the venous return. However, the valves are absent in: 3  The veins of less than 2 mm diameter.  The venae cavae.
Mitral valve is one of the valves of the heart, whose function is to keep the blood flowing in one direction through the left side of the heart and to prevent backflow of blood when the heart contracts. Itâs named for its shape, which resembles a tall bishopâs hat called a miter.here is at the same time less to it and more to it than at first appears. Mitral valve prolapse is named for a heart valve and is usually first diagnosed as a faint heart âclickâ or murmur, though it isnât a form of âheart diseaseâ in any conventional sense.