1 Total loss of circulation can lead to gangrene and loss of a limb. 2  Blockage in the renal arteries (arteries supplying the kidneys) can cause renal artery disease (stenosis). 3  The symptoms include uncontrolled high blood pressure, heart failure, and abnormal kidney function.rteries carry blood away from the heart while veins return it. Vascular disease includes any condition that affects your circulatory system. This ranges from diseases of your arteries, veins, and lymph vessels to blood disorders that affect circulation.
World's Weirdest: Vampire Bats. When it comes to feeding, this thumb-sized bat definitely sides with Dracula. Vampire bats are the only mammals on an all-blood diet â and an unsuspecting cow is the perfect prey.
Because of their ability to greatly influence their ecosystem, many bats are considered to be keystone species. Without their influence, many of the plant biodiversity that exists in the world would cease to exist, thus resulting in the decline of many vital ecosystems around the world.cientists are interested in analyzing the saliva of the Vampire bat to help develop pharmaceuticals that might one day help patients suffering from blood flow deficiencies. Given the information provided, it is safe to say that bats are very important to people and to the earth.