What Causes Stroke Symptoms
April 10th, 2008 | by admin |A stroke occurs when the flow of blood to the brain is blocked. In order to function, brain cells must have a continuous, ample supple of oxygen rich blood. If the brain cells don't get this supply of blood, they die.This then leads to the first warning signs and stroke symptoms.
One of the frequent causes of stroke is the blockage of an artery by a clot that has formed inside it. When this happens, it's called a cerebral thrombosis, and a part of the brain doesn't receive the oxygen and nourishment it needs.
It's rare for a clot to form in a healthy artery, but when the inner walls of arteries become lined with thick, rough deposits of plaque (known as atherosclerosis), the arteries are narrowed, the flow of blood slows, and clots are more likely to form. The reason is that blood is designed to clot when it comes in contact with foreign substances, and as the plaque builds up, the blood treats the plaque as an alien substance. Clotting results.
