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| multinucleate cells that pinch off thousands of anucleate platelet pieces that quickly seal themselves off from surrounding fluids |
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| blood cell formation occurs in red blood cells |
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| a stem cell that resides in the red bone marrow and produces all the formed elements of the blood; forms lymphoid stem cells and myeloid stem cells |
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| a hormone that controls the rate of erythrocyte production |
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| a hormone that accelerates the production of platelets |
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Definition
stoppage of bleeding;
three phases-vascular spasms, platelet plug formation, coagulation |
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| spasms narrow the blood vessel at the point of the injury, decreasing blood loss until clotting occurs; 1st stage of hemostasis |
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| platelets become sticky and cling to the damaged site; then they release chemicals that cause vascular spasms and attract more platelets to the site; second stage of hemostasis |
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| blood coagulates; third stage of hemostasis |
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| a substance that plugs an important roll in clotting |
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| a clot that develops and persists in an unbroken blood vessel |
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| an inflammation of a vein associated with blood clot formation |
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| small purple-ish blotches |
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| an inherited clotting defect caused by the absence of a blood-clotting factor |
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