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Vascular Reactions to Injury - Statistics

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  • This quiz has been taken 7 times
  • The average score is 6 of 15
Answer Stats
Hint Answer % Correct
What is described? "Anuclear discs, with a life span of ~7 days, produced by fragmentation of the cytoplasm of megakaryocytes in bone marrow" Platelet
83%
What is being described here? A mass composed from blood constituents within the circulation during life. Thrombus
83%
What is it called when this mass travels off and blocks a vessel elsewhere? Embolism
50%
What gaseous substance that can cause vasodilatation is a potent platelet inhibitor? Nitric oxide/NO
50%
What system is used to disassemble the plug afterwards? Fibrinolytic
33%
What is the name for the key active protease in this system? Plasmin
33%
What is the initial block that occurs due to fibrinogen binding the platelets together referred to as? Primary haemostatic plug
33%
What condition whos name derives from the purple colour of the regions of skin affected occurs due to reduced platelet count and bleeding from skin capillaries? Purpura
33%
Activation of the coagulation system leads to the production of which enzyme that then causes conversion of fibrinogen into insoluble fibrin, and creates a solid mass through fusion? Thrombin
33%
What chemical that is released leads to aggregation of them due to increasing their recruitment? Thromboxane A2/TxA2
33%
What factor mediates adhesion of them, by bridging between exposed collagen (in endothelial damage) and glycoprotein IB on their surface? Von Willebrand
33%
Two of the three are, changes in vessel wall, changes in blood constituents, and what third aspect of blood change may predispose? Flow
17%
After adhesion activation of them occurs comprising of two key components secretion of chemicsal signals and which other? Shape change
17%
What molecule that is produced by endothelial cells leads to activation of fibrinolysis? Tissue Plasminogen Activator/tPA
17%
Whose set of three rules defines the predisposing factors for thrombus formation? Virchow's
17%
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