''Like any other body system, the circulatory system can go wrong.
Problembs are often caused by blood by blood vessels -------
The delivery system, becoming blocked and stopping the flow"
In a disease called atherosclerosis layer of fatty material, build up inside arteries. Gradually, the artery gets narrower and narrower. When it is very narrow, a blood clot may form a block it completely. if this happens in the blood supply to a particular organ cut off.
If the blockage takes place in arteries supplying the brain , it can cause a stroke. If a blood supply is cut off, that part of the brain soon dies. The person affected can no longer move that part of the brain.
If blockage occurs in a coronary artery supplying the heart , it can cause heart attack. Part of the heart'muscle dies so that the heart work less efficiently. A heart attack can make a person very ill, and will kill them if the whole heart stop working .
Atherosclerosis is often linked to life style , people who smoke, eat fatty food, and get little exercise are much more likely to suffer from it.
Swollen Artery
Those arteries leaving the heart. And if one of artery get swell up like a balloon. This happened because the artery wall is thinner than it should be . Infact , wall is so thin it may burst.
Clotting
Clot formed inside a blood vessel can result a circulatory disease. The disease has mad the inside of the artery rough, and rough surface has encouraged the clot to form. This abnormal sort of clot called a Thrombus --- can cause heart attacks or strokes.
Heart Attack
The Coronary arteries should supply heart muscle with food and oxygen . If these arteries became narrower or blocked by build up of fatty material, the muscles in part of heart may cut off from its blood supply. If this happens, that part of heart dies, and person has a heart attack. In some cases , the heart attack kill the person.
Cause of stroke
A Stroke happens if part of the brain's blood supply is cut off .There are three main reason , why this may happen.
(1) A clot or thrombus block an artery supplying the brain.
(2) A clot --called an Embolus - that has travelled from another part of body blocks the artery .
(3) The brain artery burst open.
Brain bleeding
-Burst blood vessel, that has caused bleeding in brain has resulted in a stroke.
Build up
The branching of an artery is a danger point where narrowing can occur. fat and other materials build up on the wall of artery so that it gets narrower, and normally smooth lining of artery get rougher. This is more likely to happen in people who smoke, eat fatty foods and do not get regular exercise.
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