Anti aging guide

The Blood Vessels and The Heart Disease



What is atherosclerosis and how it can affect the blood vessels supplying?

The terms arteriosclerosis, atherosclerosis, and atheroma have very similar meanings and have traditionally been interpreted as ‘hardening of the arteries’, although narrowing of the arteries is at least as important a consequence. Atherosclerosis is the scourge of our time and is the leading cause of death in the developed nations, whether in the guise of coronary artery disease or of strokes. It affects the vessels supplying various parts of the body and these parts in turn sustain damage as a result of the reduction in their blood supply. There is patchy thickening of the arterial wall due to accumulation of platelets, cholesterol, and fibrous tissue, leading to a series of partial obstructions to the flow of blood. Sometimes the interior of the artery becomes totally blocked by atheroma, or by clotting of the blood due to the sluggishness of the flow, or by a microscopic leak of blood into an atheromatous plaque, or by a clump of platelets forming on an ulcerated patch and then detaching itself and lodging in a narrower branch downstream. The effects therefore vary according to the arteries involved and the degree of narrowing or occlusion. There may be an intermittently inadequate blood supply, for example when the demand for oxygen and nutrients is particularly high, or there may be total starvation. An organ or extremity denied sufficient blood is said to be ischaemic, and an area of tissue whose blood supply is cut off will die or undergo ‘infarction’. As a rule, atherosclerosis is a generalized disease, but its clinical effects in the individual patient may be confined to one particular arterial territory.

Posted by Carol Hudgens - May 17, 2012 at 2:41 pm