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7 Cards in this Set
- Front
- Back
3 main processes in Platelet Plug Formation? |
Platelet Adhesion to damaged portion of blood vessel walls Platelet Release Response when platelets stimulate each other with newly formed extensions to release chemicals from their vesicles Platelet Aggregation when sticky platelets adhere together forming the platelet plug |
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3 mechanisms of Hemostatic Response: |
Vascular Spasm Platelet Plug Formation Blood Clotting |
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Vascular Spasm |
damaged arteries and arterioles contract the smooth muscle in their walls to reduce blood loss |
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Vascular Spasm is due to what 3 things? |
Damage of the smooth muscle in the wall of the vessel Chemicals releaed by activated platelets Reflexes stimulated by pain receptors |
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Blood Clot |
Formed from a network of insoluble fibres called fibrin that trap formed elements |
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3 main stages of Fibrin Formation: |
Production of prothrombinase; Prothrombinase converts prothrombin (plasma protein) into thrombin (enzyme); Thrombin converts soluble fibrinogen into insoluble fibrin, which forms the threads of the clot |
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The enzyme prothrombinase can be formed in two ways: |
Intrinsic Pathway Extrinsic Pathway |