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    How are they the same and different?

    Both produce high blood pressure and lack of oxygen to cells right?
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    By "blot clot", I'm assuming you mean blood clot.

    Atherosclerosis is an inflammatory progressive condition where there is deposition of fat and inflammatory mediators inside the blood vessel wall. Eventually this leads to a narrowing of the blood vessel - complete occlusion leading to thrombosis.

    Another consequence of atherosclerosis is bleeding into the plaque (ulceration) and platelet aggregation at the area causing a "blood clot", this blood clot can either occlude the vessel causing thrombosis or it can get loose and travel around in the circulation until it reaches narrow blood vessels (normally in the pulmonary circulation, termed a pulmonary embolus).

    Blood clots can also occur without the context of atherosclerosis, i.e. due to damage to the blood vessel walls in trauma and in certain conditions such as sepsis.

    In summary, blood clots can occur without the context of atherosclerosis, but it is important to note that atherosclerosis predisposes to blood clots.
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    (Original post by dancingqueen123)
    How are they the same and different?

    Both produce high blood pressure and lack of oxygen to cells right?
    They are both a result of damage to the endothelium of an artery wall.

    Atherosclerosis is the narrowing of the wall due to the formation of a plaque.

    A blood clot is when insoluble fibrin traps the blood cells therefore a blood clot occurs.

    Do you need more information on this?
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    If an atheroma ruptures (bursts through endothelium) of an artery ,the artery wall is damaged which releases thromboplastin (from damaged endothelium tissue)
    This lets you "see" it http://www.youtube.com/watch?v=IH-u1qZ_nj0
 
 
 
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