A clot consisting of fibrin, platelets, red blood cells, and white blood cells that forms in a blood vessel or in a chamber of the heart and can obstruct blood flow. The rupture of atherosclerotic plaques can cause arterial thrombosis (the formation of thrombi), while tissue injury, decreased movement, oral contraceptives, prosthetic heart valves, and various metabolic disorders increase the risk for venous thrombosis. A thrombus in a coronary artery can cause a heart attack
2007-02-14 14:35:50
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answer #1
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answered by sara_p_14 2
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A thrombus, or blood clot, is the final product of the blood coagulation step in hemostasis. It is achieved via the aggregation of platelets that form a platelet plug, and the activation of the humoral coagulation system (i.e. clotting factors). A thrombus is physiologic in cases of injury, but pathologic in case of thrombosis.
Specifically, a thrombus is a blood clot in an intact blood vessel. A thrombus in a large blood vessel will decrease blood flow through that vessel. In a small blood vessel, blood flow may be completely cut-off resulting in the death of tissue supplied by that vessel. If a thrombus dislodges and becomes free-floating, it is an embolus.
2007-02-14 22:35:49
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answer #2
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answered by msmoir 1
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it is the formation of a blood clotwithin an intact blood vessel.it is not normal if it happenswhen a vessel has not been cut or punctured.a thrombus within an artery may eventually grow to block the artery,preventing blood and oxygen fromreaching the organ or tissuesupplied by the arterythrombi of this type are an importantcause of death and disability in the usa.a thrombus that formswithin one of the arteries supplying the heart muscle is the usual cause of a heart attack.a thrombus thats supplying the brain is a common cause of stroke
2007-02-14 22:41:16
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answer #3
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answered by dixie58 7
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a large blood clot in a vein or artey
2007-02-14 22:29:59
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answer #4
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answered by evon stark 5
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a blood clot
2007-02-14 22:29:44
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answer #5
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answered by Troy 6
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It's a clot.
2007-02-14 22:29:53
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answer #6
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answered by Anonymous
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its a clot
2007-02-14 22:31:11
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answer #7
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answered by tattoochick 1
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